QC/T 1253-2025 Heat resistant double end studs for automobile English, Anglais, Englisch, Inglés, えいご
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ICS
T
Professional Standard of the People's Republic of China
QC/T 1253-2025
Heat resistant double end studs for automobile
汽车用耐热双头螺柱
(English Translation)
Issue date: 2025-12-17 Implementation date: 2026-07-01
Issued by the Ministry of Industry and Information Technology of the People's Republic of China
Contents
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 Type Dimensions
5 Technical Requirements
6 Test Methods
Heat-Resistant Double-End Studs for Automotive Use
1 Scope
This document specifies the type dimensions and technical requirements for M6–M12 and M12×1.5 heat-resistant double-end studs for automotive use.
This document applies to heat-resistant double-end studs for automotive use with a maximum temperature limit below 700°C.
2 Normative References
The contents of the following documents constitute essential provisions of this document through normative reference. For dated references, only the edition corresponding to the date applies. For undated references, the latest edition (including all amendments) applies.
GB/T 2 Fasteners - Ends of Parts with External Thread
GB/T 90.1 Fasteners - Inspection and Acceptance
GB/T 90.2 Fasteners - Marking and Packaging
GB/T 196 Basic Dimensions of General Purpose Metric Threads
GB/T 197 General Purpose Metric Screw Threads - Tolerances
GB/T 1167 Transition Fit Threads
GB/T 3098.8 Mechanical Properties of Fasteners - Fastener Assemblies for Use at Temperatures from –200°C to +700°C
GB/T 3103.4 Fasteners - Tolerances - Bolt/Nut Assembly for Use at Temperatures from –200°C to +700°C
GB/T 5276 Fasteners - Bolts, Screws, Studs and Nuts - Symbols and Designations of Dimensions
GB/T 5779.3 Fasteners - Surface Discontinuities - Bolts, Screws and Studs - Special Requirements
GB/T 6189 Fasteners - Hexagon Lobular (Type E) for Fasteners
GB/T 14992 Classification and Designation of High-Temperature Materials and Intermetallic High-Temperature Materials
QC/T 326 Product Numbering Rules for Automotive Fasteners
QC/T 625 Coatings and Chemical Treatment Layers for Automotive Use
EN 10269 Steels and Nickel Alloys for Fasteners with Specified Elevated and/or Low Temperature Properties
3 Terms and Definitions
This document does not define any specific terms and definitions.
4 Type Dimensions
The type dimensions for heat-resistant double-end studs for automotive use are shown in
Figure 1 and Table 1.
Symbols and designations of dimensions shall comply with the provisions of GB/T 5276.
5 Technical Requirements
Technical requirements shall comply with the requirements specified in Table 2.
Table 2 Technical Requirements
6 Product Numbering
Product numbering shall comply with the requirements of QC/T 326.
