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Fasteners—Hexagon head bolts with split pin hole on shank—Part 2:Reduced shank—Product grade B
Standard in brief
Scope of Application:
本文件规定了细杆六角头螺杆带孔螺栓的型式尺寸、技术要求、标志和标签及标记。
本文件适用于螺纹规格为M6~M20,性能等级为5.8、6.8、8.8、A2-50、A2-70,杆部直径约等于螺纹中径,产品等级为B级的粗牙螺纹六角头螺杆带孔螺栓(以下简称“螺栓”)。
本文件规定的螺栓是在GB/T 5784规定的产品的螺杆部制出开口销孔。
Basic information
Standard No:GB/T 31.2-2025
Standard Name:紧固件 六角头螺杆带孔螺栓 第2部分:细杆B级
English Name:Fasteners—Hexagon head bolts with split pin hole on shank—Part 2:Reduced shank—Product grade B
Standard Status:现行
Release Date:1988-01-01
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 90.1,GB/T 90.2,GB/T 197,GB/T 1237,GB/T 3098.1,GB/T 3098.6,GB/T 3099.4,GB/T 3103.1,GB/T 3106,GB/T 5267.1,GB/T 5267.2,GB/T 5276,GB/T 5278,GB/T 5779.1,GB/T 5784,GB/T 16938
Publication Information
Number of pages:12
Number of words:13 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:31.2
Drafting Organization:宁波宁力高强度紧固件有限公司、山东高强紧固件有限公司、中机生产力促进中心有限公司、北京港城石化设备配件有限公司、安徽安镨特紧固科技有限公司
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