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Fasteners—Hexagon socket screws—Part 4:Hexagon socket button head screws with collar and reduced loadability
Standard in brief
Scope of Application:
本文件规定了由于头部结构而降低承载能力内六角平圆头凸缘螺钉的型式尺寸,技术要求,标志、标签及标记。
本文件适用于螺纹规格为M3~M16,粗牙螺纹,性能等级为8.8、10.9级,产品等级为A级,降低承载能力,钢制内六角平圆头凸缘螺钉(以下简称“螺钉”)。
注:需对降低承载能力(与本文件中规定的头部尺寸和内六角插入深度有关)的最小拉力载荷进行标记(性能等级前增加“0”)。对于所有规格和所有性能等级,头部承载能力按全承载能力的80%计算(见表4)。
Basic information
Standard No:GB/T 70.4-2025
Standard Name: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
English Name:Fasteners—Hexagon socket screws—Part 4:Hexagon socket button head screws with collar and reduced loadability
Standard Status:现行
Release Date:2015-12-10
Effective Date:2026-02-01
Language of Publication:中文简体
Standard Classification
ICS Number:21.060.10
CCS Number:J13
Related Standards
Referenced Standards:GB/T 2,GB/T 90.1,GB/T 90.2,GB/T 197,GB/T 1237,GB/T 3098.1,GB/T 3099.4,GB/T 3103.1,GB/T 3106,GB/T 5267.1,GB/T 5267.2,GB/T 5276,GB/T 5779.1,GB/T 16938
Adopted Standards:ISO 7380-2:2022
Adopted Standard Name:《紧固件 降低承载能力平圆头螺钉 第2部分:内六角平圆头凸缘螺钉》
Adoption Level:MOD
Publication Information
Number of pages:20
Number of words:19 K
Format:大16
Edition:1
Color Pages:0
Electronic Version:Yes
Color Images:No
Print Publication Date:2025-10-01
Standard Revision Information
Has Amendment:No
Other Information
Application Dept:国家市场监督管理总局、国家标准化管理委员会
Standard Type:CN
Standard Attribute:GB
Other Standard Number:70.4
Drafting Organization:雁栖湖基础制造技术研究院(北京)有限公司、吉利汽车研究院(宁波)有限公司、浙江美日智能装备有限公司、玉环拓跃机械有限公司、玉环市春晖车桥股份有限公司
Management Organization:全国紧固件标准化技术委员会(SAC/TC 85)
Proposing Department:中国机械工业联合会