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QC/T 618-2022: Specifications for plastic expansion nut 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 618: Historical versions
QC/T 618-2022: Specifications for plastic expansion nut---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/QCT618-2022QC AUTOMOBILE INDUSTRY STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 43.040 CCS T 31 Replacing QC/T 618-2013 Specifications for plastic expansion nut ISSUED ON: APRIL 08, 2022 IMPLEMENTED ON: OCTOBER 01, 2022 Issued by: Ministry of Industry and Information Technology of PRC Table of ContentsForeword ... 6 1 Scope ... 7 2 Normative references ... 7 3 Terms and definitions ... 7 4 Requirements ... 7 5 Test method ... 8 6 Acceptance inspection ... 9 7 Sign and packaging ... 9ForewordThis document was drafted, in accordance with GB/T 1.1-2020 "Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents". This document replaces QC/T 618-2013 "Specifications for plastic expansion nut". Compared with QC/T 618-2013, the main technical changes are as follows: - DEFINE the plastic expansion nuts stipulated in the 2013 version of the standard as plastic expansion nuts used in normal temperature environments, ADD plastic expansion nuts in high temperature environments (see Chapter 1) - ADD the requirements for prohibited substance (see 3.3) - ADD the requirements on the pull-off force of plastic expansion nuts in high- temperature environments (see 3.7) - ADD the heat resistance test requirements for plastic expansion nuts in high- temperature environments (see 4.1.2); - ADD the pull-off force test requirements for plastic expansion nuts in high- temperature environments (see 4.4.1). This document was proposed by AND shall be under the jurisdiction of the National Automotive Standardization Technical Committee (SAC/TC 114). Drafting organizations of this document: Automotive Engineering Research Institute of Guangzhou Automobile Group Co., Ltd. The main drafters of this document: Zhao Ju, Wang Wei, Wu Guogang, Huang Bo. This standard replaces the standard previously issued as follows: - First released in 1988 as ZB T 31032.3-1988; - It was revised for the first time in 1999, as QC/T 618-1999; - It was revised for the second time in 2013, as QC/T 618-2013; - This is the third revision. Specifications for plastic expansion nut1 ScopeThis document specifies the requirements, test methods, acceptance inspection, marking and packaging of automotive plastic expansion nuts. This document is applicable to plastic expansion nuts, which are matched with plastic (nylon) self-tapping screws, including plastic expansion nuts used in normal temperature environment and high temperature environment.2 Normative referencesThe contents of the following documents constitute the essential provisions of this document through normative references in the text. 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 standard. GB/T 90.1-2002 Fasteners - Acceptance inspection GB/T 90.2-2002 Fasteners - Marking and packaging GB/T 30512 Requirements for prohibited substances on automobiles QC/T 713 Tapping screws thread for plastic (nylon) QC/T 29017 Automotive molded plastic parts without individual tolerance limit the size of the deviation3 Terms and definitionsThis document does not have terms and definitions, that need to be defined.4 Requirements4.1 The material is polyamide. PA66 is recommended. Other polyamide materials can also be selected, according to the functional requirements of the parts. 4.2 Plastic expansion nuts shall have no defects, such as discoloration, deformation, deterioration, cracks. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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