GB/T 5782-2025: Fasteners - Hexagon head bolts

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Newer / historical versions: GB/T 5782-2025

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Scope

This document specifies the type, dimensions, technical requirements, marking,
labeling, and designation for hexagon head bolts of product grades A and B.
This document applies to hexagon head bolts (hereinafter referred to as "bolts") made
of steel and stainless steel with thread sizes from M1.6 to M64, coarse threads, property
classes of 4.8, 5.6, 8.8, 10.9, 12.9/12.9, A2-50, A2-70, A4-50, A4-70, A4-80, D4-70,
D4-80, D6-70, and D6-80, and product grades of A and B.

Basic Data

Standard ID	GB/T 5782-2025 (GB/T5782-2025)
Description (Translated English)	Fasteners - Hexagon head bolts
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	J13
Classification of International Standard	21.060.10
Word Count Estimation	22,212
Date of Issue	2025-10-31
Date of Implementation	2026-02-01
Older Standard (superseded by this standard)	GB/T 5782-2016
Issuing agency(ies)	State Administration for Market Regulation and Standardization Administration of China