QC/T 326-2013 in English

1 Scope

This standard specifies the coding rules for automotive standardized parts.

This standard is applicable to such fields as development, design, production, procurement and circulation of products of enterprises of automobiles, motorcycles as well as parts and components.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.

GB/T 97.1 Plain washers - Product grade A (GB/T 97.1-2002, eqv ISO 7089: 2000)
GB/T 97.4 Plain washers for screw and washer assemblies (GB/T 97.4-2002, eqv ISO 10673:1998)
GB/T 699 Quality carbon structure steel
GB/T 848 Plain washers - Small series - Product grade A (GB/T 848-2002, eqv ISO 7092: 2000)
GB/T 3098.1 Mechanical properties of fasteners - Bolts, screws and studs (GB/T 3098.1-2010, ISO 898-1: 2009, MOD)
GB/T 3098.2 Mechanical properties of fasteners - Nuts - Coarse thread (GB/T 3098. 2-2000, idt ISO 898-2: 1992)
GB/T 3098.3 Mechanical properties of fasteners - Set screws (GB/T 3098.3-2000, idt ISO 898-5: 1998)
GB/T 3098.4 Mechanical properties of fasteners - Nuts - Fine pitch thread (GB/T 3098.4-2000, idt ISO 898-6: 1994)
GB/T 3098.6 Mechanical properties of fasteners - Bolts, screws and studs made of stainless-steel (GB/T 3098.6-2000, idt ISO 3506-1: 1997)
GB/T 3098.9 Mechanical properties of fasteners - Prevailing torque type steel nuts (GB/T 3098.9-2010, ISO 2320: 2008, IDT)
GB/T 3098.15 Mechanical properties of fasteners - Nuts made of stainless-steel (GB/T 3098.15-2000, idt ISO 3506-2: 1997)
GB/T 3098.19 Mechanical properties of fasteners - Blind rivets with break pull mandrel
GB/T 3195 Aluminum and aluminum alloy wires for riveting purpose
GB/T 5231 Wrought copper and copper alloys chemical composition limits and forms of wrought products
GB/T 6478 Steels for cold heading and cold extruding (GB/T 6478-2001, neq ISO 4954: 1993)
GB/T 8815 Plasticized polyvinyl chloride (PVC) compounds for wire and cable
HG/T 2196 Standard classification system for rubber products in automotive application
QC/T 625 Metallic coatings and conversion coatings for automobile

3 Code composition

The code of an automotive standardized part is composed of 7 parts, as detailed below successively:

——Part 1: characteristic code of automotive standardized part;

——Part 2: variety code;

——Part 3: change code;

——Part 4: dimension code;

——Part 5: mechanical property or material code;

——Part 6: surface treatment code;

——Part 7: subtype code.

Foreword i
Introduction ii
1 Scope
2 Normative references
3 Code composition
4 Code expression and meaning
5 Coding examples
Annex A (Normative) Coding examples for automotive standardized parts
Annex B (Informative) System of automotive standardized parts