{"id":11099,"date":"2026-06-20T10:28:38","date_gmt":"2026-06-20T10:28:38","guid":{"rendered":"https:\/\/shincofab.com\/?p=11099"},"modified":"2026-06-20T10:38:37","modified_gmt":"2026-06-20T10:38:37","slug":"how-to-thread-metal","status":"publish","type":"post","link":"https:\/\/shincofab.com\/cs\/how-to-thread-metal\/","title":{"rendered":"Praktick\u00fd pr\u016fvodce pro v\u00fdrobn\u00ed podniky: Jak \u0159ezat z\u00e1vity do kovu"},"content":{"rendered":"<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/shincofab.com\/wp-content\/uploads\/2026\/06\/Golden-tap-with-a-blurred-machinist-in-the-background-1024x576.jpg\" alt=\"Zlat\u00fd kohoutek s rozmazanou postavou strojn\u00edka v pozad\u00ed\" class=\"wp-image-11101\" srcset=\"https:\/\/shincofab.com\/wp-content\/uploads\/2026\/06\/Golden-tap-with-a-blurred-machinist-in-the-background-1024x576.jpg 1024w, https:\/\/shincofab.com\/wp-content\/uploads\/2026\/06\/Golden-tap-with-a-blurred-machinist-in-the-background-300x169.jpg 300w, https:\/\/shincofab.com\/wp-content\/uploads\/2026\/06\/Golden-tap-with-a-blurred-machinist-in-the-background-768x432.jpg 768w, https:\/\/shincofab.com\/wp-content\/uploads\/2026\/06\/Golden-tap-with-a-blurred-machinist-in-the-background-1536x864.jpg 1536w, https:\/\/shincofab.com\/wp-content\/uploads\/2026\/06\/Golden-tap-with-a-blurred-machinist-in-the-background-18x10.jpg 18w, https:\/\/shincofab.com\/wp-content\/uploads\/2026\/06\/Golden-tap-with-a-blurred-machinist-in-the-background.jpg 1920w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Str\u00e1vil jsem v\u00edce ne\u017e deset let ve v\u00fdrob\u011b v <a href=\"\/cs\/\">ShincoFab<\/a>, v na\u0161em z\u00e1vod\u011b na zpracov\u00e1n\u00ed plech\u016f, kde se zab\u00fdv\u00e1me odstra\u0148ov\u00e1n\u00edm zbytk\u016f z\u00e1vitn\u00edk\u016f, odizolov\u00e1n\u00edm otvor\u016f a opravami po\u0161kozen\u00fdch d\u00edl\u016f. Kdy\u017e t\u00fddn\u011b zpracov\u00e1v\u00e1te tis\u00edce kovov\u00fdch sou\u010d\u00e1st\u00ed, zjist\u00edte, co funguje a co m\u016f\u017ee zma\u0159it projekt z\u00e1kazn\u00edka.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pokud chcete pochopit, jak \u0159ezat z\u00e1vity do kovu bez zbyte\u010dn\u00fdch starost\u00ed, jste na spr\u00e1vn\u00e9m m\u00edst\u011b. V tomto n\u00e1vodu v\u00e1m uk\u00e1\u017eu, jak v na\u0161\u00ed d\u00edln\u011b \u0159ez\u00e1me \u010dist\u00e9 z\u00e1vity. Dozv\u00edte se, jak\u00e9 n\u00e1stroje budete pot\u0159ebovat, jak postupovat p\u0159i \u0159ez\u00e1n\u00ed z\u00e1vit\u016f krok za krokem a jak odstranit zlomen\u00fd z\u00e1vitn\u00edk. Jako v\u00fdrobce plechov\u00fdch d\u00edl\u016f v\u00e1m uk\u00e1\u017eu, pro\u010d byste m\u011bli <em>nikdy<\/em> p\u0159\u00edmo na tenk\u00fd plech.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u017d\u00e1dn\u00e9 slo\u017eit\u00e9 technick\u00e9 v\u00fdrazy ani teorie z u\u010debnic. Jen \u010dist\u00e9, praktick\u00e9 rady, kter\u00e9 ka\u017ed\u00fd den vyu\u017e\u00edv\u00e1me u na\u0161ich pracovn\u00edch stol\u016f. Poj\u010fme se pustit do pr\u00e1ce.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_81 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Obsah<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">P\u0159ep\u00edna\u010d<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/shincofab.com\/cs\/how-to-thread-metal\/#What_Does_It_Mean_to_Thread_Metal\" >Co znamen\u00e1 \u201ez\u00e1vitov\u00e1n\u00ed kovu\u201c?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/shincofab.com\/cs\/how-to-thread-metal\/#Tapping_vs_Threading_Whats_the_Difference\" >Z\u00e1vitov\u00e1n\u00ed vs. \u0159ez\u00e1n\u00ed z\u00e1vitu (Jak\u00fd je v tom rozd\u00edl?)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/shincofab.com\/cs\/how-to-thread-metal\/#The_Difference_Between_Metric_and_Imperial_Threads\" >Rozd\u00edl mezi metrick\u00fdmi a imperi\u00e1ln\u00edmi z\u00e1vity<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/shincofab.com\/cs\/how-to-thread-metal\/#The_70_Thread_Engagement_Rule\" >Pravidlo pro z\u00e1b\u011br z\u00e1vitu 70%<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/shincofab.com\/cs\/how-to-thread-metal\/#What_Tools_Do_You_Need_to_Thread_Metal\" >Jak\u00e9 n\u00e1stroje pot\u0159ebujete k \u0159ez\u00e1n\u00ed z\u00e1vit\u016f do kovu?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/shincofab.com\/cs\/how-to-thread-metal\/#Taps_for_Holes_And_Which_Type_to_Use\" >Z\u00e1vitn\u00edky pro otvory (a jak\u00fd typ pou\u017e\u00edt)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/shincofab.com\/cs\/how-to-thread-metal\/#Dies_for_Rods_and_Bolts\" >Formy na ty\u010de a \u0161rouby<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/shincofab.com\/cs\/how-to-thread-metal\/#Why_You_Need_Cutting_Fluid\" >Pro\u010d pot\u0159ebujete chladic\u00ed kapalinu?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/shincofab.com\/cs\/how-to-thread-metal\/#How_to_Cut_Perfect_Threads_Step-by-Step\" >Jak vy\u0159ezat dokonal\u00e9 z\u00e1vity (krok za krokem)<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/shincofab.com\/cs\/how-to-thread-metal\/#Getting_Your_Pilot_Hole_Size_Right\" >Jak spr\u00e1vn\u011b zvolit velikost pilotn\u00edho otvoru<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/shincofab.com\/cs\/how-to-thread-metal\/#Keeping_Your_Tools_Straight\" >Jak udr\u017eet po\u0159\u00e1dek ve sv\u00e9m n\u00e1\u0159ad\u00ed<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/shincofab.com\/cs\/how-to-thread-metal\/#The_Forward_and_Backward_Hand_Tapping_Method\" >Metoda poklep\u00e1v\u00e1n\u00ed rukou dop\u0159edu a dozadu<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/shincofab.com\/cs\/how-to-thread-metal\/#The_Manual_Finger-Tight_Thread_Check\" >Ru\u010dn\u00ed kontrola uta\u017een\u00ed z\u00e1vitu rukou<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/shincofab.com\/cs\/how-to-thread-metal\/#How_to_Remove_a_Broken_Tap\" >Jak demontovat rozbit\u00fd kohoutek?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/shincofab.com\/cs\/how-to-thread-metal\/#How_Do_You_Thread_Different_Types_of_Metal\" >Jak se prov\u00e1d\u00ed z\u00e1vitov\u00e1n\u00ed r\u016fzn\u00fdch druh\u016f kov\u016f?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/shincofab.com\/cs\/how-to-thread-metal\/#Threading_Aluminum\" >Z\u00e1vitov\u00e1n\u00ed hlin\u00edku<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/shincofab.com\/cs\/how-to-thread-metal\/#Threading_Stainless_Steel\" >Z\u00e1vitov\u00e1n\u00ed nerezov\u00e9 oceli<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/shincofab.com\/cs\/how-to-thread-metal\/#The_Golden_Rule_for_Thin_Metal\" >Zlat\u00e9 pravidlo pro tenk\u00fd kov<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/shincofab.com\/cs\/how-to-thread-metal\/#How_Thick_Does_Metal_Need_to_Be\" >Jak siln\u00fd mus\u00ed b\u00fdt kov?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/shincofab.com\/cs\/how-to-thread-metal\/#Cost_Time_Tapping_vs_Threaded_Inserts_PEM_Nuts\" >N\u00e1klady a \u010das: Vrt\u00e1n\u00ed vs. z\u00e1vitov\u00e9 vlo\u017eky (matice PEM)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/shincofab.com\/cs\/how-to-thread-metal\/#Extruded_Holes_and_Welded_Fasteners\" >Extrudovan\u00e9 otvory a sva\u0159ovan\u00e9 spojovac\u00ed prvky<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/shincofab.com\/cs\/how-to-thread-metal\/#How_to_Fix_Stripped_or_Damaged_Threads\" >Jak opravit vy\u0159ezan\u00e9 nebo po\u0161kozen\u00e9 z\u00e1vity<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/shincofab.com\/cs\/how-to-thread-metal\/#Repair_vs_Replace\" >Oprava versus v\u00fdm\u011bna<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/shincofab.com\/cs\/how-to-thread-metal\/#Will_Drilling_a_Bigger_Hole_for_an_Insert_Weaken_the_Metal\" >Oslab\u00ed kov, pokud se pro vlo\u017eku vyvrt\u00e1 v\u011bt\u0161\u00ed otvor?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/shincofab.com\/cs\/how-to-thread-metal\/#Conclusion\" >Z\u00e1v\u011br<\/a><\/li><\/ul><\/nav><\/div>\n<h2 id=\"h-what-does-it-mean-to-thread-metal\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Does_It_Mean_to_Thread_Metal\"><\/span>Co znamen\u00e1 \u201ez\u00e1vitov\u00e1n\u00ed kovu\u201c?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Z\u00e1vitov\u00e1n\u00ed kovu spo\u010d\u00edv\u00e1 ve vy\u0159ez\u00e1v\u00e1n\u00ed spir\u00e1lovit\u00fdch dr\u00e1\u017eek do kusu kovu. Tyto dr\u00e1\u017eky umo\u017e\u0148uj\u00ed za\u0161roubovat dva d\u00edly do sebe tak, aby pevn\u011b dr\u017eely pohromad\u011b. P\u0159edstavte si v\u00fdstupky na v\u00ed\u010dku od l\u00e1hve s vodou. To je pr\u00e1v\u011b z\u00e1vit.<\/p>\n\n\n\n<h3 id=\"h-tapping-vs-threading-what-s-the-difference\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Tapping_vs_Threading_Whats_the_Difference\"><\/span>Z\u00e1vitov\u00e1n\u00ed vs. \u0159ez\u00e1n\u00ed z\u00e1vitu (Jak\u00fd je v tom rozd\u00edl?)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Lid\u00e9 \u010dasto pou\u017e\u00edvaj\u00ed v\u00fdrazy \u201cz\u00e1vitov\u00e1n\u00ed\u201d a \u201cz\u00e1vitov\u00e1n\u00ed\u201d tak, jako by znamenaly tot\u00e9\u017e. Ve v\u00fdrob\u011b vede jejich zam\u011b\u0148ov\u00e1n\u00ed k nedorozum\u011bn\u00edm.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Klep\u00e1n\u00ed na<\/strong> vytv\u00e1\u0159\u00ed vnit\u0159n\u00ed z\u00e1vity. Prov\u00e1d\u00ed se to uvnit\u0159 otvoru. P\u0159edstavte si vnit\u0159ek kovov\u00e9 matice. Takov\u00e9 z\u00e1vity naz\u00fdv\u00e1me \u201cvnit\u0159n\u00ed\u201d.<\/li>\n\n\n\n<li><strong>Z\u00e1vitov\u00e1n\u00ed<\/strong> vytv\u00e1\u0159\u00ed vn\u011bj\u0161\u00ed z\u00e1vity. Prov\u00e1d\u00ed se to na vn\u011bj\u0161\u00ed stran\u011b kovov\u00e9 ty\u010de. P\u0159edstavte si vn\u011bj\u0161\u00ed stranu \u0161roubu. Takov\u00e9 z\u00e1vity naz\u00fdv\u00e1me \u201cvn\u011bj\u0161\u00edmi\u201d.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Pokud chcete za\u0161roubovat \u0161roub do ploch\u00e9ho kovov\u00e9ho plechu, mus\u00edte do otvoru v plechu vy\u0159ezat z\u00e1vit.<\/p>\n\n\n\n<h3 id=\"h-the-difference-between-metric-and-imperial-threads\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"The_Difference_Between_Metric_and_Imperial_Threads\"><\/span>Rozd\u00edl mezi metrick\u00fdmi a imperi\u00e1ln\u00edmi z\u00e1vity<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Kdy\u017e n\u00e1m klienti ve spole\u010dnosti ShincoFab zas\u00edlaj\u00ed CAD v\u00fdkresy, rozli\u0161ujeme dva syst\u00e9my:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Imperial (standardn\u00ed):<\/strong> Zde se pou\u017e\u00edv\u00e1 jednotka \u201ez\u00e1vity na palec\u201c (TPI). Nap\u0159\u00edklad \u0161roub 1\/4-20 m\u00e1 \u0161\u00ed\u0159ku 1\/4 palce a na jeden palec p\u0159ipad\u00e1 20 z\u00e1vit\u016f.<\/li>\n\n\n\n<li><strong>Metrick\u00e9 \u00fadaje:<\/strong> T\u00edm se m\u011b\u0159\u00ed vzd\u00e1lenost mezi vrcholy z\u00e1vitu. \u0160roub M8 x 1,25 m\u00e1 \u0161\u00ed\u0159ku 8 mm. Vzd\u00e1lenost mezi jednotliv\u00fdmi vrcholy z\u00e1vitu \u010din\u00ed 1,25 mm.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Pokud je zam\u011bn\u00edte a pokus\u00edte se n\u00e1sil\u00edm zasunout metrick\u00fd \u0161roub do otvoru pro imperi\u00e1ln\u00ed \u0161roub, zni\u010d\u00edte si kovov\u00fd d\u00edl. Vid\u011bli jsme, jak to d\u011blaj\u00ed za\u010d\u00ednaj\u00edc\u00ed obr\u00e1b\u011b\u010di, a v\u00fdsledkem je zmetkov\u00fd materi\u00e1l.<\/p>\n\n\n\n<h3 id=\"h-the-70-thread-engagement-rule\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"The_70_Thread_Engagement_Rule\"><\/span>Pravidlo pro z\u00e1b\u011br z\u00e1vitu 70%<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Z\u00e1sah z\u00e1vitu ud\u00e1v\u00e1, do jak\u00e9 m\u00edry se vnit\u0159n\u00ed a vn\u011bj\u0161\u00ed z\u00e1vit dot\u00fdkaj\u00ed. Mo\u017en\u00e1 si mysl\u00edte, \u017ee pro pevn\u00e9 uchycen\u00ed pot\u0159ebujete kontakt 100%. Nen\u00ed to tak.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kdy\u017e \u0161kol\u00edm nov\u00e9 oper\u00e1tory, zakazuji jim sna\u017eit se o kontakt 100%. \u0158ez\u00e1n\u00ed z\u00e1vitu 100% vy\u017eaduje p\u0159\u00edli\u0161 velk\u00fd to\u010div\u00fd moment. Pokud to zkus\u00edte, \u0159ezac\u00ed n\u00e1stroj se v\u00e1m zlom\u00ed na polovinu. M\u00edsto toho se sna\u017ete o <strong>Z\u00e1b\u011br z\u00e1vitu 70%<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Zde je vysv\u011btlen\u00ed, pro\u010d je 70% na\u0161\u00edm intern\u00edm konstruk\u010dn\u00edm vod\u00edtkem \u2013 jedn\u00e1 se o postup zalo\u017een\u00fd na datech a bezpe\u010dnostn\u00edch rezerv\u00e1ch, kter\u00e9 se b\u011b\u017en\u011b pou\u017e\u00edvaj\u00ed v p\u0159\u00edru\u010dk\u00e1ch pro mechanick\u00e9 navrhov\u00e1n\u00ed, jako je nap\u0159\u00edklad autoritativn\u00ed <a href=\"https:\/\/en.wikipedia.org\/wiki\/Machinery%27s_Handbook\" target=\"_blank\" rel=\"noreferrer noopener\">P\u0159\u00edru\u010dka o stroj\u00edch<\/a>.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Zaji\u0161\u0165uje ve\u0161kerou p\u0159ilnavost po\u017eadovanou technick\u00fdmi specifikacemi pro model 99%.<\/li>\n\n\n\n<li>V otvoru tak z\u016fst\u00e1v\u00e1 voln\u00fd prostor, aby se v\u00e1\u0161 n\u00e1stroj nezablokoval t\u0159\u00edskami.<\/li>\n\n\n\n<li>Zrychluje to v\u00fdrobu a ka\u017edoro\u010dn\u011b n\u00e1m to u\u0161et\u0159\u00ed tis\u00edce dolar\u016f za po\u0161kozen\u00e9 z\u00e1vitn\u00edky.<\/li>\n<\/ul>\n\n\n\n<h2 id=\"h-what-tools-do-you-need-to-thread-metal\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Tools_Do_You_Need_to_Thread_Metal\"><\/span>Jak\u00e9 n\u00e1stroje pot\u0159ebujete k \u0159ez\u00e1n\u00ed z\u00e1vit\u016f do kovu?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/shincofab.com\/wp-content\/uploads\/2026\/06\/Three-threading-taps-and-three-dies-cleanly-arranged-1024x576.jpg\" alt=\"T\u0159i z\u00e1vitn\u00edky a t\u0159i z\u00e1vito\u0159ezy p\u0159ehledn\u011b uspo\u0159\u00e1dan\u00e9\" class=\"wp-image-11103\" srcset=\"https:\/\/shincofab.com\/wp-content\/uploads\/2026\/06\/Three-threading-taps-and-three-dies-cleanly-arranged-1024x576.jpg 1024w, https:\/\/shincofab.com\/wp-content\/uploads\/2026\/06\/Three-threading-taps-and-three-dies-cleanly-arranged-300x169.jpg 300w, https:\/\/shincofab.com\/wp-content\/uploads\/2026\/06\/Three-threading-taps-and-three-dies-cleanly-arranged-768x432.jpg 768w, https:\/\/shincofab.com\/wp-content\/uploads\/2026\/06\/Three-threading-taps-and-three-dies-cleanly-arranged-1536x864.jpg 1536w, https:\/\/shincofab.com\/wp-content\/uploads\/2026\/06\/Three-threading-taps-and-three-dies-cleanly-arranged-18x10.jpg 18w, https:\/\/shincofab.com\/wp-content\/uploads\/2026\/06\/Three-threading-taps-and-three-dies-cleanly-arranged.jpg 1920w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">K \u0159ez\u00e1n\u00ed z\u00e1vit\u016f do kovu nepot\u0159ebujete velkou sadu n\u00e1\u0159ad\u00ed. I v profesion\u00e1ln\u00ed d\u00edln\u011b se p\u0159i ru\u010dn\u00edm \u0159ez\u00e1n\u00ed z\u00e1vit\u016f vysta\u010d\u00edte s n\u011bkolika kusy n\u00e1\u0159ad\u00ed.<\/p>\n\n\n\n<h3 id=\"h-taps-for-holes-and-which-type-to-use\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Taps_for_Holes_And_Which_Type_to_Use\"><\/span><strong>Z\u00e1vitn\u00edky pro otvory (a jak\u00fd typ pou\u017e\u00edt)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>K\u00f3nick\u00e9 z\u00e1vitn\u00edky:<\/strong> Z\u00e1vity na \u0161pi\u010dce jsou zplo\u0161t\u011bl\u00e9. Pro rovn\u00fd za\u010d\u00e1tek z\u00e1vitu v\u017edy nejprve pou\u017eijte ku\u017eelov\u00fd z\u00e1vitn\u00edk.<\/li>\n\n\n\n<li><strong>Z\u00e1suvkov\u00e9 odbo\u010dky:<\/strong> Tento n\u00e1stroj pou\u017eijte po z\u00fa\u017eovac\u00edm z\u00e1vitn\u00edku, abyste dos\u00e1hli hlub\u0161\u00edho z\u00e1\u0159ezu do kovu.<\/li>\n\n\n\n<li><strong>Dno kohoutk\u016f:<\/strong> Tyto n\u00e1stroje se pou\u017e\u00edvaj\u00ed pouze k zatla\u010den\u00ed z\u00e1vit\u016f na dno \u201cslep\u00e9ho\u201d otvoru.<\/li>\n<\/ul>\n\n\n\n<h3 id=\"h-dies-for-rods-and-bolts\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Dies_for_Rods_and_Bolts\"><\/span><strong>Formy na ty\u010de a \u0161rouby<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Pokud si chcete vyrobit vlastn\u00ed \u0161roub, budete pot\u0159ebovat z\u00e1vito\u0159ez. Z\u00e1vito\u0159ez nasad\u00edte na konec hol\u00e9 kovov\u00e9 ty\u010de. Jak jej pomoc\u00ed kl\u00ed\u010de \u201cdie stock\u201d ot\u00e1\u010d\u00edte sm\u011brem dol\u016f, vnit\u0159n\u00ed zuby odstra\u0148uj\u00ed kov a vytv\u00e1\u0159ej\u00ed vn\u011bj\u0161\u00ed z\u00e1vit.<\/p>\n\n\n\n<h3 id=\"h-why-you-need-cutting-fluid\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why_You_Need_Cutting_Fluid\"><\/span>Pro\u010d pot\u0159ebujete chladic\u00ed kapalinu?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Nesna\u017ete se \u0159ezat kov nasucho. U\u017e z druh\u00e9 strany d\u00edlny pozn\u00e1m podle toho sk\u0159\u00edpav\u00e9ho zvuku, kdy\u017e n\u011bkdo \u0159e\u017ee nasucho.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kdy\u017e se kov t\u0159ese o kov, vznik\u00e1 t\u0159en\u00ed a teplo. Pokud nepou\u017eijete chladic\u00ed kapalinu, kovov\u00e9 t\u0159\u00edsky se t\u0159en\u00edm p\u0159iva\u0159\u00ed k z\u00e1vitn\u00edku. T\u00edm vzniknou zubat\u00e9 dr\u00e1\u017eky. B\u011bhem n\u011bkolika minut se z\u00e1vitn\u00edk zasekne a zlom\u00ed se.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sta\u010d\u00ed p\u00e1r kapek chladic\u00ed kapaliny. Ta n\u00e1stroj ochlazuje, odplavuje t\u0159\u00edsky a zaji\u0161\u0165uje \u010dist\u00e9 a hladk\u00e9 z\u00e1vity, kter\u00e9 spl\u0148uj\u00ed po\u017eadavky na\u0161\u00ed kontroly kvality.<\/p>\n\n\n\n<h2 id=\"h-how-to-cut-perfect-threads-step-by-step\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_to_Cut_Perfect_Threads_Step-by-Step\"><\/span>Jak vy\u0159ezat dokonal\u00e9 z\u00e1vity (krok za krokem)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 id=\"h-getting-your-pilot-hole-size-right\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Getting_Your_Pilot_Hole_Size_Right\"><\/span>Jak spr\u00e1vn\u011b zvolit velikost pilotn\u00edho otvoru<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">V\u0161echno za\u010d\u00edn\u00e1 p\u0159edvrt\u00e1n\u00edm. Pokud je v\u00e1\u0161 vrt\u00e1k p\u0159\u00edli\u0161 velk\u00fd, \u0161roub se vytrhne. Pokud je p\u0159\u00edli\u0161 mal\u00fd, z\u00e1vitn\u00edk se zasekne.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Abyste dos\u00e1hli optim\u00e1ln\u00edho utahovac\u00edho momentu 70%, pot\u0159ebujete spr\u00e1vnou velikost. Chcete-li nap\u0159\u00edklad dos\u00e1hnout utahovac\u00edho momentu 70% u standardn\u00edho \u0161roubu 1\/4-20, mus\u00edte pou\u017e\u00edt vrt\u00e1k #7. Nikdy to neodhadujte. Na ka\u017ed\u00e9 vrta\u010dce v na\u0161\u00ed tov\u00e1rn\u011b m\u00e1me nalepen\u00e9 tabulky s vrt\u00e1ky a z\u00e1vitn\u00edky, vypo\u010d\u00edtan\u00e9 na z\u00e1klad\u011b standardn\u00ed geometrie z\u00e1vit\u016f ASME Unified. V\u017edy si ov\u011b\u0159te velikost vrt\u00e1ku podle <a href=\"https:\/\/web.mae.ufl.edu\/designlab\/Lab%20Assignments\/EML2322L%20Tap%20Drill%20Chart.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Tabulka z\u00e1vitn\u00edk\u016f podle normy ANSI\/ASME B1.1<\/a> ne\u017e se dotknete vrta\u010dky.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tabulka standardn\u00edch velikost\u00ed z\u00e1vitov\u00fdch vrt\u00e1k\u016f (z\u00e1vit 70%):<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Velikost z\u00e1vitu<\/th><th>Velikost z\u00e1vitn\u00edku<\/th><\/tr><\/thead><tbody><tr><td>1\/4-20<\/td><td>#7<\/td><\/tr><tr><td>5\/16-18<\/td><td>F<\/td><\/tr><tr><td>3\/8-16<\/td><td>5\/16\u2033<\/td><\/tr><tr><td>1\/2-13<\/td><td>27\/64\u2033<\/td><\/tr><tr><td>M6 x 1,0<\/td><td>5,0 mm<\/td><\/tr><tr><td>M8 x 1,25<\/td><td>6,8 mm<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 id=\"h-keeping-your-tools-straight\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Keeping_Your_Tools_Straight\"><\/span>Jak udr\u017eet po\u0159\u00e1dek ve sv\u00e9m n\u00e1\u0159ad\u00ed<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Jakmile vyvrt\u00e1te otvor, zasu\u0148te do n\u011bj hrot z\u00e1vitn\u00edku. N\u00e1stroj mus\u00edte dr\u017eet rovn\u011b. Pomoc\u00ed \u00faheln\u00edku zkontrolujte \u00fahel ze dvou r\u016fzn\u00fdch stran. \u0160ikm\u00fd z\u00e1vitn\u00edk je hlavn\u00edm d\u016fvodem, pro\u010d d\u00edly neproch\u00e1zej\u00ed kontrolou kvality.<\/p>\n\n\n\n<h3 id=\"h-the-forward-and-backward-hand-tapping-method\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"The_Forward_and_Backward_Hand_Tapping_Method\"><\/span>Metoda poklep\u00e1v\u00e1n\u00ed rukou dop\u0159edu a dozadu<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/shincofab.com\/wp-content\/uploads\/2026\/06\/Hands-turning-a-tap-wrench-to-thread-metal-in-vise-1024x576.jpg\" alt=\"Ruce ot\u00e1\u010dej\u00edc\u00ed kl\u00ed\u010dem na kohoutek p\u0159i \u0159ez\u00e1n\u00ed z\u00e1vitu do kovu ve sv\u011br\u00e1ku\" class=\"wp-image-11105\" srcset=\"https:\/\/shincofab.com\/wp-content\/uploads\/2026\/06\/Hands-turning-a-tap-wrench-to-thread-metal-in-vise-1024x576.jpg 1024w, https:\/\/shincofab.com\/wp-content\/uploads\/2026\/06\/Hands-turning-a-tap-wrench-to-thread-metal-in-vise-300x169.jpg 300w, https:\/\/shincofab.com\/wp-content\/uploads\/2026\/06\/Hands-turning-a-tap-wrench-to-thread-metal-in-vise-768x432.jpg 768w, https:\/\/shincofab.com\/wp-content\/uploads\/2026\/06\/Hands-turning-a-tap-wrench-to-thread-metal-in-vise-1536x864.jpg 1536w, https:\/\/shincofab.com\/wp-content\/uploads\/2026\/06\/Hands-turning-a-tap-wrench-to-thread-metal-in-vise-18x10.jpg 18w, https:\/\/shincofab.com\/wp-content\/uploads\/2026\/06\/Hands-turning-a-tap-wrench-to-thread-metal-in-vise.jpg 1920w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Do otvoru nakapejte n\u011bkolik kapek chladic\u00ed kapaliny a vyv\u00edjejte na z\u00e1vitn\u00edk rovnom\u011brn\u00fd tlak sm\u011brem dol\u016f. Chcete-li ru\u010dn\u011b vy\u0159ezat \u010dist\u00e9 z\u00e1vity, postupujte podle t\u00e9to standardn\u00ed t\u0159\u00edkrokov\u00e9 metody s pohybem dop\u0159edu a dozadu:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Odst\u0159ihn\u011bte nit:<\/strong> Oto\u010dte kohoutek ve sm\u011bru hodinov\u00fdch ru\u010di\u010dek o p\u016fl ot\u00e1\u010dky, dokud neuc\u00edt\u00edte, \u017ee se zakousl do z\u00e1kladn\u00edho kovu. P\u0159esta\u0148te ot\u00e1\u010det.<\/li>\n\n\n\n<li><strong>Zni\u010dte \u010dip:<\/strong> Oto\u010dte z\u00e1vitn\u00edk opa\u010dn\u00fdm sm\u011brem (proti sm\u011bru hodinov\u00fdch ru\u010di\u010dek) o \u010dtvrt ot\u00e1\u010dky, dokud neuc\u00edt\u00edte nebo neusly\u0161\u00edte z\u0159eteln\u00e9 \u201ccvaknut\u00ed\u201d. Tento zvuk vznik\u00e1 odlamov\u00e1n\u00edm kovov\u00fdch t\u0159\u00edsek uvnit\u0159 dr\u00e1\u017eky z\u00e1vitn\u00edku.<\/li>\n\n\n\n<li><strong>Opakovat a vymazat:<\/strong> St\u0159\u00eddejte p\u016fl ot\u00e1\u010dky dop\u0159edu pro \u0159ez\u00e1n\u00ed a \u010dtvrt ot\u00e1\u010dky dozadu pro odlamov\u00e1n\u00ed t\u0159\u00edsek, dokud nedos\u00e1hnete po\u017eadovan\u00e9 hloubky otvoru.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Pokud vynech\u00e1te zp\u011btn\u00fd chod, budou se uvnit\u0159 otvoru hromadit dlouh\u00e9, souvisl\u00e9 kovov\u00e9 t\u0159\u00edsky. To okam\u017eit\u011b zp\u016fsob\u00ed zaseknut\u00ed n\u00e1stroje, vytrhne pr\u00e1v\u011b vy\u0159ezan\u00e9 z\u00e1vity a pravd\u011bpodobn\u011b zlom\u00ed z\u00e1vitn\u00edk na polovinu.<\/p>\n\n\n\n<h3 id=\"h-the-manual-finger-tight-thread-check\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"The_Manual_Finger-Tight_Thread_Check\"><\/span>Ru\u010dn\u00ed kontrola uta\u017een\u00ed z\u00e1vitu rukou<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">K rychl\u00e9 po\u010d\u00e1te\u010dn\u00ed kontrole p\u0159\u00edmo ve v\u00fdrob\u011b nemus\u00edte v\u017edy pou\u017e\u00edvat form\u00e1ln\u00ed z\u00e1vitov\u00e9 m\u011brky typu \u201eGo\/No-Go\u201c. Odstra\u0148te z otvoru kovov\u00e9 t\u0159\u00edsky a prove\u010fte ru\u010dn\u00ed zkou\u0161ku nasazen\u00ed tak, \u017ee \u0161roub za\u0161roubujete rukou.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Zkontrolujte, zda se kolo nevikl\u00e1 (nadm\u011brn\u00e1 velikost):<\/strong> Uchopte hlavu \u0161roubu a posu\u0148te ji ze strany na stranu. Pokud uc\u00edt\u00edte, \u017ee \u0161roub nar\u00e1\u017e\u00ed nebo cvak\u00e1 o st\u011bny z\u00e1vitu, znamen\u00e1 to, \u017ee tolerance z\u00e1vitu je p\u0159\u00edli\u0161 velk\u00e1. Toto spojen\u00ed nen\u00ed bezpe\u010dn\u00e9 a p\u0159i zat\u00ed\u017een\u00ed sel\u017ee.<\/li>\n\n\n\n<li><strong>Zkontrolujte, zda nen\u00ed \u0159et\u011bz zaseknut\u00fd (p\u0159\u00edli\u0161 mal\u00fd):<\/strong> Pokud se \u0161roub zasekne v polovin\u011b a k jeho dal\u0161\u00edmu utahov\u00e1n\u00ed je t\u0159eba pou\u017e\u00edt kl\u00ed\u010d, znamen\u00e1 to, \u017ee z\u00e1vit je bu\u010f p\u0159\u00edli\u0161 t\u011bsn\u00fd, nebo je otvor st\u00e1le ucpan\u00fd ne\u010distotami.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Spr\u00e1vn\u011b vyvrtan\u00fd otvor spl\u0148uje \u201etest dvou prst\u016f\u201c: umo\u017e\u0148uje hladk\u00e9 za\u0161roubov\u00e1n\u00ed spr\u00e1vn\u00e9ho \u0161roubu a\u017e na doraz pouze pomoc\u00ed palce a ukazov\u00e1\u010dku.<\/p>\n\n\n\n<h2 id=\"h-how-to-remove-a-broken-tap\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_to_Remove_a_Broken_Tap\"><\/span>Jak demontovat rozbit\u00fd kohoutek?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">To se st\u00e1v\u00e1 ka\u017ed\u00e9mu. \u010clov\u011bk na to jde p\u0159\u00edli\u0161 tvrd\u011b a <em>cvaknut\u00ed<\/em>. Ve spole\u010dnosti ShincoFab znamenal zlomen\u00fd z\u00e1vitn\u00edk d\u0159\u00edve zpo\u017ed\u011bn\u00ed dod\u00e1vky a vy\u0159azen\u00ed d\u00edlu. Nyn\u00ed ho v\u0161ak m\u016f\u017eete zachr\u00e1nit.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Za prv\u00e9, <strong>Nesna\u017ete se to vyvrtat.<\/strong> Z\u00e1vitn\u00edky jsou vyrobeny z kalen\u00e9 oceli a va\u0161e vrt\u00e1ky se p\u0159i jejich pou\u017eit\u00ed roztav\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pokud z povrchu vy\u010dn\u00edv\u00e1 mal\u00fd kousek, vezm\u011bte si up\u00ednac\u00ed kle\u0161t\u011b, pevn\u011b jej sev\u0159ete a oto\u010dte dozadu. Pokud se z\u00e1vitn\u00edk zlomil pod povrchem, budete pot\u0159ebovat vytahova\u010d z\u00e1vitn\u00edk\u016f. Zasu\u0148te jeho ocelov\u00e9 prsty do otev\u0159en\u00fdch dr\u00e1\u017eek zlomen\u00e9ho z\u00e1vitn\u00edku, posu\u0148te obj\u00edmku dol\u016f, aby se prsty zajistily, a vyto\u010dte jej ven.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Tip z Pro Shopu:<\/em> Zlomen\u00e9 kohoutky jsou zaseknut\u00e9 kovov\u00fdmi t\u0159\u00edskami. Ne\u017e za\u010dneme tahat, zah\u0159ejeme okoln\u00ed kov ho\u0159\u00e1kem. Tepeln\u00e1 rozta\u017enost tento \u00fachop dostate\u010dn\u011b uvoln\u00ed, aby bylo mo\u017en\u00e9 kohoutek vyt\u00e1hnout.<\/p>\n\n\n\n<h2 id=\"h-how-do-you-thread-different-types-of-metal\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_Do_You_Thread_Different_Types_of_Metal\"><\/span>Jak se prov\u00e1d\u00ed z\u00e1vitov\u00e1n\u00ed r\u016fzn\u00fdch druh\u016f kov\u016f?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">V na\u0161em z\u00e1vod\u011b p\u0159izp\u016fsobujeme n\u00e1\u0161 postup podle materi\u00e1lu, kter\u00fd \u0159ez\u00e1me.<\/p>\n\n\n\n<h3 id=\"h-threading-aluminum\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Threading_Aluminum\"><\/span>Z\u00e1vitov\u00e1n\u00ed hlin\u00edku<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Mo\u017en\u00e1 si mysl\u00edte, \u017ee hlin\u00edk (nap\u0159\u00edklad standardn\u00ed 5052) se snadno z\u00e1vituje, proto\u017ee je m\u011bkk\u00fd. Pr\u00e1v\u011b ta m\u011bkkost je v\u0161ak probl\u00e9mem. Hlin\u00edk se nerozpad\u00e1 na vlo\u010dky, ale odlupuje se v lepkav\u00fdch prou\u017ec\u00edch, kter\u00e9 ucp\u00e1vaj\u00ed z\u00e1vitn\u00edk. Pou\u017e\u00edvejte dostatek chladic\u00ed kapaliny a ka\u017ed\u00fdch n\u011bkolik ot\u00e1\u010dek z\u00e1vitn\u00edk vytahejte, abyste tyto prou\u017eky odstranili.<\/p>\n\n\n\n<h3 id=\"h-threading-stainless-steel\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Threading_Stainless_Steel\"><\/span>Z\u00e1vitov\u00e1n\u00ed nerezov\u00e9 oceli<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Nerezov\u00e1 ocel (nap\u0159\u00edklad 304 nebo 316) je \u00fapln\u011b jin\u00e1 liga. Pokud budete tla\u010dit p\u0159\u00edli\u0161 slab\u011b nebo se p\u0159i \u0159ez\u00e1n\u00ed zdr\u017e\u00edte p\u0159\u00edli\u0161 dlouho, materi\u00e1l rychle dojde k <a href=\"https:\/\/bssa.org.uk\/bssa_articles\/mechanism-and-measurement-of-work-hardening-of-austenitic-stainless-steels-during-plastic-deformation\/\" target=\"_blank\" rel=\"noreferrer noopener\">zpevn\u011bn\u00ed deforma\u010dn\u00ed (zpevn\u011bn\u00ed ztv\u00e1rn\u011bn\u00edm)<\/a>, \u010d\u00edm\u017e se povrch ztvrdne a p\u0159i dal\u0161\u00edm pr\u016fchodu se bude h\u016f\u0159e \u0159ezat.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pe\u010dliv\u011b sledujeme \u017eivotnost n\u00e1stroj\u016f. Standardn\u00ed z\u00e1vitn\u00edk m\u016f\u017ee na na\u0161ich CNC stroj\u00edch vyvrtat 1 000 otvor\u016f do hlin\u00edku, ale p\u0159i vrt\u00e1n\u00ed do nerezov\u00e9 oceli 304 se ten sam\u00fd z\u00e1vitn\u00edk zlom\u00ed ji\u017e po 50 otvorech. Pou\u017e\u00edvejte \u0159ezac\u00ed olej na b\u00e1zi s\u00edry a nikdy p\u0159i ot\u00e1\u010den\u00ed nepou\u017e\u00edvejte nadm\u011brnou s\u00edlu.<\/p>\n\n\n\n<h2 id=\"h-the-golden-rule-for-thin-metal\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"The_Golden_Rule_for_Thin_Metal\"><\/span>Zlat\u00e9 pravidlo pro tenk\u00fd kov<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Jako v\u00fdrobce plechov\u00fdch d\u00edl\u016f se neust\u00e1le setk\u00e1v\u00e1me s t\u00edm, \u017ee z\u00e1kazn\u00edci d\u011blaj\u00ed tuto chybu: zas\u00edlaj\u00ed n\u00e1m v\u00fdkresy s po\u017eadavkem na vy\u0159ez\u00e1n\u00ed z\u00e1vit\u016f p\u0159\u00edmo do plechu o tlou\u0161\u0165ce 1 mm. Tyto v\u00fdkresy odm\u00edt\u00e1me.<\/p>\n\n\n\n<h3 id=\"h-how-thick-does-metal-need-to-be\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_Thick_Does_Metal_Need_to_Be\"><\/span>Jak siln\u00fd mus\u00ed b\u00fdt kov?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Aby byl \u0161roub bezpe\u010dn\u011b upevn\u011bn, mus\u00ed se zachytit alespo\u0148 na t\u0159ech a\u017e \u010dty\u0159ech z\u00e1vitech. Pokud je tlou\u0161\u0165ka kovu men\u0161\u00ed ne\u017e 1\/8 palce, nem\u00e1te k dispozici dostatek materi\u00e1lu. P\u0159i utahov\u00e1n\u00ed \u0161roub vytrhne z\u00e1vity.<\/p>\n\n\n\n<h3 id=\"h-cost-amp-time-tapping-vs-threaded-inserts-pem-nuts\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cost_Time_Tapping_vs_Threaded_Inserts_PEM_Nuts\"><\/span>N\u00e1klady a \u010das: Vrt\u00e1n\u00ed vs. z\u00e1vitov\u00e9 vlo\u017eky (matice PEM)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/shincofab.com\/wp-content\/uploads\/2026\/06\/Self-clinching-PEM-nut-installed-flush-in-sheet-metal-1024x576.jpg\" alt=\"Samozav\u00edrac\u00ed matice typu PEM zapu\u0161t\u011bn\u00e1 do plechu\" class=\"wp-image-11107\" srcset=\"https:\/\/shincofab.com\/wp-content\/uploads\/2026\/06\/Self-clinching-PEM-nut-installed-flush-in-sheet-metal-1024x576.jpg 1024w, https:\/\/shincofab.com\/wp-content\/uploads\/2026\/06\/Self-clinching-PEM-nut-installed-flush-in-sheet-metal-300x169.jpg 300w, https:\/\/shincofab.com\/wp-content\/uploads\/2026\/06\/Self-clinching-PEM-nut-installed-flush-in-sheet-metal-768x432.jpg 768w, https:\/\/shincofab.com\/wp-content\/uploads\/2026\/06\/Self-clinching-PEM-nut-installed-flush-in-sheet-metal-1536x864.jpg 1536w, https:\/\/shincofab.com\/wp-content\/uploads\/2026\/06\/Self-clinching-PEM-nut-installed-flush-in-sheet-metal-18x10.jpg 18w, https:\/\/shincofab.com\/wp-content\/uploads\/2026\/06\/Self-clinching-PEM-nut-installed-flush-in-sheet-metal.jpg 1920w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Jak\u00e9 je tedy standardn\u00ed \u0159e\u0161en\u00ed v tomto odv\u011btv\u00ed? U v\u011bt\u0161iny plechov\u00fdch sk\u0159\u00edn\u00ed se spol\u00e9h\u00e1me na samozav\u00edrac\u00ed spojov\u00e1n\u00ed <a href=\"\/cs\/sheet-metal-hardware-insertion-services\/\">hardwarov\u00e9 vlo\u017eky<\/a>. Konkr\u00e9tn\u00edm favoritem v na\u0161em skladu je <a href=\"https:\/\/www.pemnet.com\/wp-content\/uploads\/sites\/2\/2022\/06\/self-clinching-fastener-handbook.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Samozav\u00edrac\u00ed matice PEM\u00ae od spole\u010dnosti PennEngineering<\/a>, proto\u017ee jejich origin\u00e1ln\u00ed technologie zaji\u0161\u0165uje nejspolehliv\u011bj\u0161\u00ed p\u0159ilnavost.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A\u010dkoli z\u00e1vitov\u00e1n\u00ed otvoru nevy\u017eaduje \u017e\u00e1dn\u00e9 dal\u0161\u00ed kov\u00e1n\u00ed a zd\u00e1 se b\u00fdt bez n\u00e1klad\u016f, pod\u00edvejme se na skute\u010dnou ekonomiku v\u00fdroby. Z\u00e1vitov\u00e1n\u00ed otvoru na CNC stroji trv\u00e1 10 sekund strojn\u00edho \u010dasu. Zalisov\u00e1n\u00ed matice PEM do pr\u00e1zdn\u00e9ho otvoru pomoc\u00ed lisovac\u00edho stroje trv\u00e1 3 sekundy a stoj\u00ed p\u00e1r cent\u016f za kus. Za tyto centy z\u00edsk\u00e1te ocelov\u00fd z\u00e1vit, kter\u00fd se z kovu nikdy nevytrhne.<\/p>\n\n\n\n<h3 id=\"h-extruded-holes-and-welded-fasteners\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Extruded_Holes_and_Welded_Fasteners\"><\/span>Extrudovan\u00e9 otvory a sva\u0159ovan\u00e9 spojovac\u00ed prvky<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Pokud je dan\u00e1 sou\u010d\u00e1st vystavena nadm\u011brn\u00e9mu nam\u00e1h\u00e1n\u00ed, pou\u017e\u00edv\u00e1me dv\u011b dal\u0161\u00ed n\u00e1hradn\u00ed \u0159e\u0161en\u00ed:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Extrudovan\u00e9 otvory:<\/strong> Na\u0161e d\u011brovac\u00ed lisy vyraz\u00ed otvor a kov nat\u00e1hnou sm\u011brem nahoru, \u010d\u00edm\u017e vytvo\u0159\u00ed l\u00edmec. T\u00edm se tlou\u0161\u0165ka zdvojn\u00e1sob\u00ed, tak\u017ee do n\u011bj m\u016f\u017eeme vy\u0159ezat z\u00e1vit.<\/li>\n\n\n\n<li><strong>Sva\u0159ovan\u00e9 spojovac\u00ed prvky:<\/strong> Pro zaji\u0161t\u011bn\u00ed pevnosti spoje p\u0159iva\u0159ujeme ocelovou matici p\u0159\u00edmo p\u0159es nevypln\u011bn\u00fd otvor.<\/li>\n<\/ul>\n\n\n\n<h2 id=\"h-how-to-fix-stripped-or-damaged-threads\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_to_Fix_Stripped_or_Damaged_Threads\"><\/span>Jak opravit vy\u0159ezan\u00e9 nebo po\u0161kozen\u00e9 z\u00e1vity<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Pokud otvor ztrat\u00ed p\u0159ilnavost, dojde k po\u0161kozen\u00ed z\u00e1vitu v d\u016fsledku p\u0159\u00edli\u0161n\u00e9ho uta\u017een\u00ed, \u0161patn\u00e9ho nasazen\u00ed \u0161roubu do z\u00e1vitu nebo koroze.<\/p>\n\n\n\n<h3 id=\"h-repair-vs-replace\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Repair_vs_Replace\"><\/span>Oprava versus v\u00fdm\u011bna<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ne\u017e se pust\u00edte do opravy, zva\u017ete, zda to stoj\u00ed za tu n\u00e1mahu. Pokud zni\u010d\u00edte dr\u017e\u00e1k, vyho\u010fte ho do ko\u0161e na \u0161rot. Pokud jste v\u0161ak po\u0161kodili z\u00e1vit na zak\u00e1zkov\u00e9 z\u00e1kladov\u00e9 desce, sada na opravu z\u00e1vit\u016f $40 bude va\u0161\u00edm nejlep\u0161\u00edm pomocn\u00edkem.<\/p>\n\n\n\n<h3 id=\"h-will-drilling-a-bigger-hole-for-an-insert-weaken-the-metal\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Will_Drilling_a_Bigger_Hole_for_an_Insert_Weaken_the_Metal\"><\/span>Oslab\u00ed kov, pokud se pro vlo\u017eku vyvrt\u00e1 v\u011bt\u0161\u00ed otvor?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Lid\u00e9 propadaj\u00ed panice, kdy\u017e si uv\u011bdom\u00ed, \u017ee mus\u00ed po\u0161kozen\u00fd otvor vyvrtat na v\u011bt\u0161\u00ed pr\u016fm\u011br, aby se do n\u011bj ve\u0161la vlo\u017eka Helicoil (dr\u00e1t\u011bn\u00e1 vlo\u017eka). Boj\u00ed se, \u017ee t\u00edm oslab\u00ed z\u00e1kladn\u00ed kov.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Je to pr\u00e1v\u011b naopak. Vlo\u017een\u00ed nerezov\u00e9 vlo\u017eky zv\u00fd\u0161\u00ed pevnost otvoru oproti hol\u00e9mu kovu. Nap\u0159\u00edklad z\u00e1vitov\u00fd otvor v hol\u00e9m hlin\u00edku se m\u016f\u017ee vytrhnout p\u0159i s\u00edle 1 500 liber. Pokud stejn\u00fd otvor vyztu\u017e\u00edte nerezovou vlo\u017ekou Helicoil, vydr\u017e\u00ed zat\u00ed\u017een\u00ed p\u0159es 3 000 liber. T\u00edmto zp\u016fsobem vylep\u0161ujete dan\u00fd d\u00edl.<\/p>\n\n\n\n<h2 id=\"h-conclusion\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Z\u00e1v\u011br<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Z\u00e1vitov\u00e1n\u00ed kovu nemus\u00ed b\u00fdt h\u00e1dankou. Pokud vyvrt\u00e1te spr\u00e1vn\u00fd vodic\u00ed otvor, pou\u017eijete vhodnou \u0159eznou kapalinu a zajist\u00edte odvod t\u0159\u00edsek, z\u00edsk\u00e1te \u010dist\u00e9 a pevn\u00e9 z\u00e1vity.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pamatujte si, \u017ee na\u0161\u00edm z\u00e1kladn\u00edm pravidlem ve spole\u010dnosti ShincoFab je nikdy se nepokou\u0161et p\u0159\u00edmo z\u00e1vitovat tenk\u00fd plech. V\u017edy po\u010d\u00edtat s pou\u017eit\u00edm z\u00e1vitov\u00e9 vlo\u017eky, jako je nap\u0159\u00edklad matice PEM.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V na\u0161\u00ed v\u00fdrob\u011b se t\u011bmito pravidly \u0159\u00edd\u00edme ka\u017ed\u00fd den, abychom mohli dod\u00e1vat d\u00edly na\u0161im z\u00e1kazn\u00edk\u016fm. Z vlastn\u00ed zku\u0161enosti v\u00edme, \u017ee kdy\u017e si na spr\u00e1vn\u00e9 proveden\u00ed pr\u00e1ce vyhrad\u00edme p\u00e1r sekund, u\u0161et\u0159\u00edme si pozd\u011bji hodiny pr\u00e1ce s opravou zni\u010den\u00e9ho kovu. Vezm\u011bte si n\u00e1\u0159ad\u00ed, je\u0161t\u011b jednou zkontrolujte velikost vrt\u00e1ku a pus\u0165te se do pr\u00e1ce.<\/p>","protected":false},"excerpt":{"rendered":"<p>I have spent over a decade on the production floor at ShincoFab, our sheet metal fabrication facility, breaking taps, stripping holes, and fixing ruined parts. When you process thousands of metal components a week, you learn what works and what will destroy a client\u2019s project. If you want to understand how to thread metal without [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":11103,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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