QC/T 1255-2025 Active Industry standards-Car

QC/T 1255-2025 Square nut for automobile

QC/T 1255-2025 Square nut for automobile

Publish Date: 2025-12-29 Implement Date: 2026-07-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: QC/T 1255-2025

Standard Type: Industry standards

Standard Status: Active

is_force_gb: no

CCS Name: Lubrication parts, sealing parts, and connecting parts

ICS Name: Road vehicle equipment

Publish Date: 2025-12-29

Implement Date: 2026-07-01

Pages: 12 pages

Scope

This document specifies the types and dimensions, technical requirements, and product numbering of square nuts for automobiles.
This document applies to square nuts for automobiles with a nominal thread diameter of D=5 mm to 12 mm, a mechanical performance grade of Grade 8 or Grade 10, and a product grade of Grade A.

Development Information

Word Count: 8 Thousand words Pages: 12 pages

Referenced Standards

GB/T 90.1-2002 Fasteners—Acceptance inspection GB/T 90.1-2023 Fasteners—Acceptance inspection GB/T 90.2-2002 Fasteners—Marking and packaging GB/T 196-2003 General purpose metric screw threads—Basic dimensions GB/T 196-2025 General purpose metric screw threads—Basic dimensions GB/T 197-2003 General purpose metric screw threads—Tolerances GB/T 197-2018 General purpose metric screw threads—Tolerances GB/T 3098.2-2000 Mechanical properties of fasteners—Nuts—Coarse thread GB/T 3098.2-2015 Mechanical properties of fasteners—Nuts GB/T 3098.2-2025 Mechanical properties of fasteners—Part 2:Nuts GB/T 3103.1-2002 Tolerances for fasteners—Bolts, screws, studs and nuts GB/T 5276-2015 Fasteners—Bolts,screws,studs and nuts—Symbols and descriptions of dimensions GB/T 5779.2-2000 Fasteners—Surface discontinuities—Nuts GB/T 30512-2014 Requirements for prohibited substances on automobiles QC/T 326-2013 Car standard parts product numbering rules QC/T 326-2025 Numbering rules for automotive standardized parts QC/T 625-2024 Metallic coatings and conversion coatings for automobile QC/T 625-2013 Car coating and plating layers and chemical treatment layers

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