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QC/T 857-2023: Weld studs Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid QC/T 857: Historical versions
QC/T 857-2023: Weld studs---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/QCT857-2023QC AUTOMOTIVE INDUSTRY STANDARD ICS 43.040 CCS T 33 Replacing QC/T 857-2011 Weld Studs 焊接螺柱 Issued on: DECEMBER 20, 2023 Implemented on: JULY 1, 2024 Issued by. Ministry of Industry and Information Technology of the People’s Republic of China Table of ContentsForeword... 7 1 Scope... 8 2 Normative References... 8 3 Terms and Definitions... 9 4 Type and Size... 9 5 Technical Conditions... 10 6 Product Number... 11ForewordThis Document was drafted as per the rules specified in GB/T 1.1-2020 Directives for Standardization – Part 1.Rules for the Structure and Drafting of Standardizing Documents. This Document replaced QC/T 857-2011 Weld Studs. Compared with QC/T 857-2011, the major technical changes of this Document are as follows. --- Add the applicable system of products specified in this Document (see Clause 1 of this Edition); --- Add the mechanical property grade 8.8 of weld studs (see Table 1 of this Edition); --- Increased the tolerance product grade of weld stud threads from B to A (see Table 1 of this Edition); --- Add the types of surface treatment (see Table 2 of this Edition); --- Add the requirements for hazardous substances in automobiles (see Table 2 of this Edition). This Document was proposed by and under the jurisdiction of National Technical Committee of Auto Standardization (SAC/TC 114). Drafting organizations of this Document. Zhejiang Jieneng Auto Parts Co., Ltd.; Sichuan Aerospace Shiyuan Technology Co., Ltd.; Anhui Jianghuai Automobile Group Co., Ltd.; Zhejiang University of Technology; Changchun Automotive Test Center Co., Ltd.; Dongfeng Motor Corporation; and Beijing Foton Daimler Automotive Co., Ltd. Chief drafting staffs of this Document. Guo Fushun, Luo Hong, Yang Wenjiang, Tan Dapeng, Jia Bingqiang, Li Yan, Jia Meixia, and Li Zhong. The historical editions replaced by this Document are as follows. --- QC/T 857-2011; --- It is first-time revised hereby. Weld Studs1 ScopeThis Document specifies the type, size, technical conditions and number of weld studs with thread specifications of M5 ~ M16, mechanical property grades 4.8 and 8.8, fastener tolerance product grade A, and no surface treatment. This Document is applicable to weld studs that can adjust the length of the tie rod with the threaded fork after welding the tie rod with the weld studs of the automobile control mechanism.2 Normative ReferencesThe provisions in following documents become the essential provisions of this Document through reference in this Document. For the dated documents, only the versions with the dates indicated are applicable to this Document; for the undated documents, only the latest version (including all the amendments) is applicable to this Document. GB/T 90.1 Fasteners – Acceptance inspection GB/T 90.2 Fasteners – Marking and packaging GB/T 196 General Purpose Metric Screw Threads - Basic Dimensions GB/T 197 General Purpose Metric Screw Threads - Diameter and pitch series GB/T 3098.1 Mechanical properties of fasteners - Bolts, screws and studs GB/T 3103.1 Tolerances for fasteners - Bolts, screws, studs and nuts GB/T 30512 Requirements for prohibited substances on automobiles GB/T 5779.1 Fasteners - Surface discontinuities - Bolts, screws and studs for general requirements QC/T 326 Coding rules for automotive standardized parts QC/T 625 Metallic coatings and conversion coatings for automobile ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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