{"id":6521,"date":"2023-02-16T13:56:41","date_gmt":"2023-02-16T05:56:41","guid":{"rendered":"https:\/\/xzfastener.com\/?p=6521"},"modified":"2026-06-17T13:58:05","modified_gmt":"2026-06-17T05:58:05","slug":"what-should-be-included-in-a-custom-bolt-drawing","status":"publish","type":"post","link":"https:\/\/xzfastener.com\/it\/what-should-be-included-in-a-custom-bolt-drawing\/","title":{"rendered":"Cosa dovrebbe essere incluso in un disegno di bulloni personalizzato?"},"content":{"rendered":"<p>A custom bolt drawing must give the supplier enough information to quote, manufacture, inspect, and pack the part correctly. A simple sketch with \u201cM20 bolt\u201d is not enough for production.<\/p>\n\n\n\n<p>In real sourcing, many custom bolt problems come from missing details. The bolt shape may be clear, but the thread length, tolerance, material, grade, coating, or inspection requirement is not. That creates quotation delays, wrong samples, or failed assembly after delivery.<\/p>\n\n\n\n<p>For drawing-based orders, buyers should treat the drawing as the main technical contract.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Basic Information Every Custom Bolt Drawing Needs<\/h2>\n\n\n\n<p>A custom bolt drawing should clearly define the geometry, material, strength, surface finish, and acceptance criteria.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Elemento di disegno<\/th><th>Cosa specificare<\/th><th>Perch\u00e9 \u00e8 importante<\/th><\/tr><\/thead><tbody><tr><td>Nome del prodotto<\/td><td>Custom bolt, anchor bolt, shoulder bolt, U-bolt, etc.<\/td><td>Defines the part type<\/td><\/tr><tr><td>Standard reference<\/td><td>DIN, ISO, ASTM, ANSI, or \u201cmade to drawing\u201d<\/td><td>Helps compare with standard fasteners<\/td><\/tr><tr><td>Diametro<\/td><td>Nominal and actual critical diameter<\/td><td>Controls fit and strength<\/td><\/tr><tr><td>Lunghezza totale<\/td><td>Lunghezza totale del bullone<\/td><td>Affects assembly depth<\/td><\/tr><tr><td>Passo della filettatura<\/td><td>Filettatura metrica, UNC, UNF o speciale<\/td><td>Previene la mancata corrispondenza del dado<\/td><\/tr><tr><td>Lunghezza del filo<\/td><td>Filetto completo o filetto parziale<\/td><td>Controlla il coinvolgimento<\/td><\/tr><tr><td>Stile della testa<\/td><td>Hex, square, round, socket, special head<\/td><td>Influisce sull'utensileria e sullo spazio libero<\/td><\/tr><tr><td>Materiale<\/td><td>Carbon steel, alloy steel, stainless steel, etc.<\/td><td>Controlla la forza e la resistenza alla corrosione<\/td><\/tr><tr><td>Grade \/ class<\/td><td>8.8, 10.9, 12.9, B7, A2-70, ecc.<\/td><td>Definisce le prestazioni meccaniche<\/td><\/tr><tr><td>Finitura superficiale<\/td><td>Zinc plated, HDG, black oxide, Dacromet, plain<\/td><td>Controlla la corrosione e l'adattamento della filettatura<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Gli acquirenti possono confrontare disponibili <a href=\"https:\/\/xzfastener.com\/it\/products-category\/standard-fasteners\/\">elementi di fissaggio standard<\/a> before deciding whether a custom bolt is required.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Critical Dimensions to Mark<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Thread and Shank Details<\/h3>\n\n\n\n<p>Thread information must be complete. Do not write only \u201cM16\u201d if the thread pitch is important.<\/p>\n\n\n\n<p>Includere:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Diametro maggiore<\/li>\n\n\n\n<li>Passo della filettatura<\/li>\n\n\n\n<li>Lunghezza del filo<\/li>\n\n\n\n<li>Lunghezza del gambo<\/li>\n\n\n\n<li>Chamfer or thread start<\/li>\n\n\n\n<li>Tolleranza della filettatura se richiesta<\/li>\n\n\n\n<li>Requisito del dado corrispondente<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Head and Special Features<\/h3>\n\n\n\n<p>For non-standard heads, mark all working dimensions. This includes head height, across flats, socket depth, hole diameter, radius, groove, slot, bend angle, or welded feature.<\/p>\n\n\n\n<p>If the part is not available as a catalog item, <a href=\"https:\/\/xzfastener.com\/it\/products-category\/custom-non-standard-fasteners\/\">elementi di fissaggio personalizzati non standard<\/a> should be quoted with a complete drawing or approved sample.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Material, Grade and Finish Requirements<\/h2>\n\n\n\n<p>Material and strength should not be assumed from appearance.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Requisito<\/th><th>Esempio<\/th><\/tr><\/thead><tbody><tr><td>Materiale<\/td><td>40Cr, SCM440, 304, 316, carbon steel<\/td><\/tr><tr><td>Grado di forza<\/td><td>Class 8.8, 10.9, 12.9, ASTM A193 B7<\/td><\/tr><tr><td>Trattamento termico<\/td><td>Quenched and tempered, if required<\/td><\/tr><tr><td>Finitura superficiale<\/td><td>Zinc plated, hot-dip galvanized, Dacromet<\/td><\/tr><tr><td>Test documents<\/td><td>MTC, hardness test, tensile test, inspection report<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Per applicazioni a carico elevato, rivedere <a href=\"https:\/\/xzfastener.com\/it\/products-category\/high-strength-fasteners\/\">elementi di fissaggio ad alta resistenza<\/a> and define mechanical testing before production.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Common Drawing Mistakes<\/h2>\n\n\n\n<p>Evita questi problemi:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Missing thread pitch.<\/li>\n\n\n\n<li>No tolerance on critical dimensions.<\/li>\n\n\n\n<li>Material listed but no strength grade.<\/li>\n\n\n\n<li>Coating not clearly defined.<\/li>\n\n\n\n<li>No matching nut or washer information.<\/li>\n\n\n\n<li>Drawing does not match the physical sample.<\/li>\n\n\n\n<li>Revision number missing.<\/li>\n\n\n\n<li>No inspection or certificate requirement.<\/li>\n<\/ol>\n\n\n\n<p>Per le applicazioni sensibili alla corrosione, confrontare <a href=\"https:\/\/xzfastener.com\/it\/products-category\/various-coated-fasteners\/\">elementi di fissaggio rivestiti<\/a> prima di confermare il traguardo.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Lista di controllo finale della richiesta di offerta<\/h2>\n\n\n\n<p>Before sending a custom bolt drawing, confirm:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Drawing version and unit system<\/li>\n\n\n\n<li>Size, thread, head, and special features<\/li>\n\n\n\n<li>Material, grade, heat treatment, and coating<\/li>\n\n\n\n<li>Quantity and tolerance<\/li>\n\n\n\n<li>Ambiente applicativo<\/li>\n\n\n\n<li>Certificati e rapporti di ispezione richiesti<\/li>\n\n\n\n<li>Packaging and labeling needs<\/li>\n<\/ul>\n\n\n\n<p>A good custom bolt drawing reduces guessing. It helps the supplier quote faster, produce more accurately, and inspect the final parts against clear requirements.<\/p>","protected":false},"excerpt":{"rendered":"<p>A custom bolt drawing must give the supplier enough information to quote, manufacture, inspect, and pack the part correctly. A simple sketch with \u201cM20 bolt\u201d is not enough for production. In real sourcing, many custom bolt problems come from missing details. The bolt shape may be clear, but the thread length, tolerance, material, grade, coating, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[493],"class_list":["post-6521","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-drawings-samples-rfq-requirements"],"acf":[],"_links":{"self":[{"href":"https:\/\/xzfastener.com\/it\/wp-json\/wp\/v2\/posts\/6521","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/xzfastener.com\/it\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/xzfastener.com\/it\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/xzfastener.com\/it\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/xzfastener.com\/it\/wp-json\/wp\/v2\/comments?post=6521"}],"version-history":[{"count":1,"href":"https:\/\/xzfastener.com\/it\/wp-json\/wp\/v2\/posts\/6521\/revisions"}],"predecessor-version":[{"id":6522,"href":"https:\/\/xzfastener.com\/it\/wp-json\/wp\/v2\/posts\/6521\/revisions\/6522"}],"wp:attachment":[{"href":"https:\/\/xzfastener.com\/it\/wp-json\/wp\/v2\/media?parent=6521"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xzfastener.com\/it\/wp-json\/wp\/v2\/categories?post=6521"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xzfastener.com\/it\/wp-json\/wp\/v2\/tags?post=6521"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}