1、 WORLDWIDE ENGINEERING STANDARDS General Specification GMW3290 Hexagon Nut and Washer Assemblies with Conical Washer Product Grade A Copyright 2011 General Motors Company All Rights Reserved October 2011 Originating Department: North American Engineering Standards Page 1 of 4 1 Introduction 1.1 Scop
2、e. This standard gives specifications for hexagon nuts to ISO 4033, Type 2 with thread diameters from M6 to M14 and conical spring washer non-detachable, turnable. See Figure 1. 1.2 Designation. GMW3290. 2 References Note: Only the latest approved standards are applicable unless otherwise specified.
3、 2.1 External Standards/Specifications. ISO 724 ISO 4033 ISO 898-2 ISO 4759-1 ISO 965-1 ISO 6157-2 ISO 1502 ISO/TS 16949 2.2 GM Standards/Specifications. GMW3059 3 Requirements Figure 1: Hexagon Nut with Conical Washer Provided by IHSNot for ResaleNo reproduction or networking permitted without lice
4、nse from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW3290 Copyright 2011 General Motors Company All Rights Reserved October 2011 Page 2 of 4 3.1 Dimensions. See Figure 2. Figure 2: Dimension Illustration Table 1: Dimensions Diameter M6 M8 M10 M12 M14 P Pitch 1 1.25 1.5 1.75 2 da Maximum 6.75 8.75
5、10.8 13 15.1 Minimum 6 8 10 12 14 de 17 22 25 29 32 ds Maximum 19 24 28 32 36 Minimum 18.48 23.48 27.48 31.38 35.38 e Minimum 11.05 14.38 16.64 20.03 23.36 h 1.6 0.05 2.0 0.06 2.5 0.08 3.0 0.08 3.5 0.1 h1 8.5 11 13 17 19.5 m Maximum 5.7 7.5 9.3 12 14.1 Minimum 5.4 7.14 8.94 11.57 13.4 mw Minimum 4.3
6、2 5.71 7.15 9.26 10.7 s Maximum 10 13 15 18 21 Minimum 9.78 12.73 14.73 17.73 20.67 Property Class 8 8 10 10 10 Note 1: Conical spring washer non-detachable, turnable. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS
7、 GMW3290 Copyright 2011 General Motors Company All Rights Reserved October 2011 Page 3 of 4 3.2 Material. Nut: Steel, ISO 898-2. See Table 1 for property class for each nut diameter. Washer: Spring steel, hardness 360 to 430 HV. 3.3 Surface Treatment. As specified on the detail drawing. 3.4 Thread.
8、ISO 724, ISO 965-1. Thread tolerance, recommended 6G before surface treatment. After surface treatment, the thread shall be gaged according to ISO 1502 with a GO-gage of tolerance H. 3.5 Tolerances. Product Grade A, ISO 4759-1. 3.6 Surface Discontinuities. ISO 6157-2. 3.7 Proof Load Requirements. Ac
9、cording to ISO 898-2. 3.8 Acceptability. ISO/TS 16949, GM Production Part Approval Process (PPAP). 4 Rules and Regulations 4.1 Legal Regulations. All materials must satisfy applicable laws, rules, regulations and recommendations valid in the country of usage. 4.2 Language. In the event of conflict b
10、etween the English and domestic language, the English language shall take precedence. 4.3 Inspection and Rejection. Samples of components or materials released to a GM general specification shall be tested for conformity with the requirements of this general specification and approved by the respons
11、ible Engineering department prior to commencement of delivery of bulk supplies. A new approval must be received for any changes, e.g., properties, manufacturing process, location of manufacture, etc. If not otherwise agreed, all testing and documentation normally required for initial release must be
12、 completed. It is the responsibility of the supplier to inform the customer in a timely manner, without solicitation, and to include documentation of all modifications of materials and/or processes and to apply for a new release. If not otherwise agreed, all release tests shall be repeated and docum
13、ented by the supplier prior to commencement of delivery of non-conforming bulk supplies. In individual cases, a shorter test can be agreed to between the responsible Engineering department and the supplier. 4.4 Initial Source Approval. Not applicable 4.5 All materials supplied to this standard must
14、comply with the requirements of GMW3059, Restricted and Reportable Substances for Parts. 5 Notes 5.1 Glossary. Not applicable. 5.2 Acronyms, Abbreviations, and Symbols. PPAP Production Part Approval Process 6 Coding System This standard shall be referenced in other documents, drawings, etc., as foll
15、ows: GMW3290 7 Release and Revisions This standard was originated in May 1999. It was first approved by Fasteners Engineering in February 2000. It was first published in June 2000. Issue Publication Date Description (Organization) 1 JUN 2000 Initial publication. 2 JUN 2001 Editorial revision. (GMNA)
16、 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW3290 Copyright 2011 General Motors Company All Rights Reserved October 2011 Page 4 of 4 Issue Publication Date Description (Organization) 3 MAY 2005 Reformatted, 3.3. (Fasteners Group) 4 OCT 2011 Five year refresh. Removed part numbers and finish from the spec, revised M10 WAF from 16 mm to 15 mm. (Fasteners Global Council) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
