GB/T 794-2021 PDF EnglishUS$170.00 · In stock · Download in 9 seconds
GB/T 794-2021: Strengthened cup head square neck bolts Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 794: Historical versions
GB/T 794-2021: Strengthened cup head square neck bolts---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT794-2021NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 21.060.10 CCS J 13 Replacing GB/T 794-1993 Strengthened cup head square neck bolts Issued on: DECEMBER 31, 2021 Implemented on: JULY 01, 2022 Issued by. State Administration for Market Regulation; Standardization Administration of the People’s Republic of China. Table of ContentsForeword... 3 1 Scope... 5 2 Normative references... 5 3 Terms and definitions... 6 4 Type and size... 6 5 Technical conditions and reference standards... 9 6 Designation... 10 References... 11ForewordThis document was drafted in accordance with the rules given in GB/T 1.1-2020, Directives for standardization - Part 1.Rules for the structure and drafting of standardizing documents. This document is one of the series national standards of "Square Neck Bolts", of which the following documents has been issued. -- GB/T 10, Countersunk head square neck bolts; -- GB/T 12, Cup head square neck bolts; -- GB/T 14, Mushroom head square neck bolts; -- GB/T 794, Strengthened cup head square neck bolts; -- GB/T 801, Cup head square neck bolts with small head and short neck - Product grade B. This document replaces GB/T 794-1993 Strengthened cap head square neck bolts; compared with GB/T 794-1993, in addition to editorial changes, the main technical changes of this document are as follows. a) Replace "commodity specification range" with "optical length range" (see Table 1, Table 2; Table 1 and Table 2 of the 1993 edition); b) Unify the referenced thread standards as GB/T 193, GB/T 9145, GB/T 9146 (see Table 3; Table 3 of the 1993 edition); c) Add the general technical conditions, which shall be in accordance with GB/T 16938 (see Table 3); d) Delete grade 3.6 from, and add grade 4.6 to, type B products (see Table 3; Table 3 of the 1993 edition); e) Delete the oxidized surface treatment (see Table 3 of the 1993 edition); f) Add the technical requirements for electroplating of steel bolts, which shall be in accordance with GB/T 5267.1 (see Table 3); g) Add the technical requirements for non-electrolytically applied zinc flake coatings, which shall be in accordance with GB/T 5267.2 (see Table 3); h) Add the technical requirements for hot-dip galvanizing of steel bolts, which shall be in accordance with GB/T 5267.3 (see Table 3); Strengthened cup head square neck bolts1 ScopeThis document specifies the type, size, technical conditions and marking of strengthened cup head square neck bolts. This document is applicable to strengthened cup head square neck bolts with thread specifications of M6 ~ M20 and product grades of B (type A) and C (type B).2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the version corresponding to that date is applicable to this document; for undated references, the latest version (including all amendments) is applicable to this document. GB/T 2, Fasteners - Ends of parts with external thread GB/T 90.1, Fasteners - Acceptance inspection GB/T 90.2, Fasteners - Marking and packaging GB/T 193, General purpose metric screw threads - General plan GB/T 1237, Designation system for fasteners GB/T 3098.1, Mechanical properties of fasteners - Bolts, screws and studs GB/T 3098.6, Mechanical properties of fasteners - Stainless steel bolts, screws and studs GB/T 3103.1, Tolerances for fasteners - Bolts, screws, studs and nuts GB/T 5267.1, Fasteners - Electroplated coatings GB/T 5267.2, Fasteners - Non-electrolytically applied zinc flake coatings GB/T 5267.3, Fasteners - Hot dip galvanized coatings GB/T 5276, Fasteners - Bolts, screws, studs and nuts - Symbols and descriptions of dimensions GB/T 5779.1, Fasteners - Surface discontinuities - Bolts, screws and studs for general requirements ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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