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GB/T 5357-2023: Keys for hexalobular socket screws 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 5357: Historical versions
Similar standardsGB/T 5357-2023: Keys for hexalobular socket screws---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/GBT5357-2023GB NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA ICS 25.140.30 CCS J 47 Replacing GB/T 5357-1998 Keys for hexalobular socket screws 内六角花形扳手 ISSUED ON: AUGUST 6, 2023 IMPLEMENTED ON: MARCH 1, 2024 Issued by: State Administration for Market Regulation; Standardization Administration of PRC. Table of ContentsForeword ... 3 1 Scope ... 5 2 Normative references ... 5 3 Terms and definitions ... 5 4 Product classification and marking ... 5 5 Technical requirements ... 6 6 Test steps ... 10 7 Inspection rules ... 13 8 Marking, packaging, transportation, and storage ... 13 Appendix A (normative) Special gauge for inspection of flower shape dimensions of the key's working part ... 14 Appendix B (normative) Torque test block ... 16ForewordThis document was drafted in accordance with the provisions of GB/T 1.1-2020 Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents. This document replaces GB/T 5357-1998 Hexagon spline wrenches. Compared with GB/T 5357-1998, in addition to structural adjustments and editorial changes, the main technical changes are as follows: a) Product classification is added (see 4.1); b) Product marking is changed (see 4.2; see 3.2.3 of the 1998 edition); c) Material requirements and test methods are added (see 5.1 and 6.1); d) Product dimensions are changed (see 5.2; see 3.2 of the 1998 edition); e) Surface quality is changed (see 5.3; see 4.4 and 4.5 of the 1998 edition); f) The hardness is changed (see 5.4; see 4.6 of the 1998 edition); g) The torque is changed (see 5.5; see 4.6 of the 1998 edition); h) The test method is changed (see Chapter 6; see Chapter 5 of the 1998 edition); i) Inspection rules are changed (see Chapter 7; see Chapter 6 of the 1998 edition); j) The marking, packaging, transportation, and storage are changed (see Chapter 8; see Chapter 7 of the 1998 edition); k) The special gauge for inspection of flower shape dimension is changed (see Appendix A; see Appendix A of the 1998 edition); l) The torque test block is changed (see Appendix B; see Appendix B of the 1998 edition); Please note that some content in this document may be subject to patents. The issuing agency of this document assumes no responsibility for identifying patents. This document was proposed by China National Light Industry Council. This document shall be under the jurisdiction of the National Technical Committee on Hardware Products of Standardization Administration of China (SAC/TC174). Drafting organizations of this document: Jiande Yuanfeng Tool Co., Ltd., Zhejiang Rongsheng Industrial Co., Ltd., Cangzhou De'an Special Explosion-proof Tools Keys for hexalobular socket screws1 ScopeThis document specifies the product classification and marking, technical requirements, test methods, inspection rules, markings, packaging, transportation, and storage of keys for hexalobular socket screws, and describes the corresponding test methods. This document applies to hexalobular keys (hereinafter referred to as "keys") for tightening hexalobular socket screws and bolts.2 Normative referencesThe following documents contain the provisions which, through normative reference in this document, constitute the essential provisions of this document. For the dated referenced documents, only the versions with the indicated dates are applicable to this document; for the undated referenced documents, only the latest version (including all the amendments) is applicable to this document. GB/T 230.1 Metallic materials - Rockwell hardness test - Part 1: Test method GB/T 1299 Tool and mould steels GB/T 2828.1 Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection GB/T 3077 Alloy structure steels GB/T 5305 Packaging, marking, transportation and storage of hand tools GB/T 6060.2 Roughness comparison specimens - Ground, turned, bored, milled, shaped and planed3 Terms and definitionsThere are no terms or definitions that need to be defined in this document.4 Product classification and marking4.1 Product classification ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. |
