GB/T 70.4-2025

Active

Fasteners—Hexagon socket screw—Part 4: Hexagon socket button head screws with collar and reduced loadability

紧固件内六角螺钉第4部分：降低承载能力内六角平圆头凸缘螺钉

Standard Type

GBT

ICS

21.060.10

CCS

J13

Status

现行

Issue Date

2025-10-31

Implementation

2026-02-01

Responsible Dept

中国机械工业联合会

Drafting Unit

N/A