GB/T 3750.3-1983
Replaced
GB/T 5784-2025
Active
National standards
GB/T 5784-2025 Fasteners—Hexagon head bolts—Reduced shank—Product grade B
GB/T 5784-2025 Fasteners—Hexagon head bolts—Reduced shank—Product grade B
Basic Information
Standard Code:
GB/T 5784-2025
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Fasteners
ICS Name:
Bolts, screws, and studs
Publish Date:
2025-10-31
Implement Date:
2026-02-01
Publisher:
国家市场监督管理总局、国家标准化管理委员会
Technical Committee:
全国紧固件标准化技术委员会(SAC/TC 85)
Pages:
16 pages
Scope
本文件规定了B级细杆六角头螺栓的型式尺寸、技术要求、标志和标签及标记。
本文件适用于螺纹规格为M3~M20,粗牙螺纹,性能等级为5.8、6.8、8.8、A2-50、A2-70,产品等级为B级,细杆(杆部直径约等于螺纹中径),钢制和不锈钢制六角头螺栓(以下简称“螺栓”)。
Development Information
Drafting Units:
中机生产力促进中心有限公司、湖南申亿机械应用研究院有限公司、定西高强度紧固件股份有限公司、玉环市春晖车桥股份有限公司、浙江美日智能装备有限公司、玉环拓跃机械有限公司
Replace the following standards
GB/T 5784-1986
Referenced Standards
GB/T 2-2001 Fasteners—Ends of parts with external thread
GB/T 2-2016 Fasteners—Ends of parts with external thread
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 197-2003 General purpose metric screw threads—Tolerances
GB/T 197-2018 General purpose metric screw threads—Tolerances
GB/T 1237-2000 Designation system for fasteners
GB/T 3098.1-2000 Mechanical properties of fasteners—Bolts, screws and studs
GB/T 3098.1-2010 Mechanical properties of fasteners—Bolts,screws and studs
GB/T 3098.6-2000 Mechanical properties of fasteners—Bolts, screws and studs made of stainless-steel
GB/T 3098.6-2014 Mechanical properties of fasteners—Stainless steel Bolts,screws and studs
GB/T 3098.6-2023 Mechanical properties of fasteners—Stainless steel bolts,screws and studs
GB/T 3099.4-2021 Terminology of fasteners—Control,inspection,delivery,acceptance and quality
GB/T 3103.1-2002 Tolerances for fasteners—Bolts, screws, studs and nuts
GB/T 3106-2016 Fasteners—Bolts,screws and studs—Nominal lengths and thread lengths
GB/T 5267.1-2002 Fasteners—Electroplated coatings
GB/T 5267.1-2023 Fasteners—Electroplate coating
GB/T 5267.2-2002 Fasteners—Non-electrolytically applied zinc flake coatings
GB/T 5267.2-2017 Fasteners—Non-electrolytically applied zinc flake coatings
GB/T 5267.2-2021 Fasteners—Non-electrolytically applied zinc flake coatings
GB/T 5267.3-2008 Fasteners—Hot dip galvanized coatings
GB/T 5276-2015 Fasteners—Bolts,screws,studs and nuts—Symbols and descriptions of dimensions
GB/T 5779.1-2000 Fasteners—Surface discontinuities—Bolts,screws and studs for general requirements
GB/T 16938-1997 Fasteners—General requirements for blots,screws,studs and nuts
GB/T 16938-2008 Fasteners—General requirements for bolts,screws,studs and nuts
Adopt standards
ISO 4015:2022
Related Standards
GB/T 5277-1985
Active
GB/T 5277-1985 Fasteners—Clearance holes for bolts and screws
GB/T 6560-1986
Replaced
GB/T 6560-1986 Cross recessed pan head thread forming screws
GB/T 6561-1986
Replaced
GB/T 6561-1986 Cross recessed countersunk head thread forming screws
GB/T 6562-1986
Replaced
GB/T 6562-1986 Cross recessed raised countersunk head thread forming screws
GB/T 6563-1986
Replaced