GB/T 5785-2025 Active National standards

GB/T 5785-2025 Fasteners—Hexagon head bolts—Fine pitch thread

GB/T 5785-2025 Fasteners—Hexagon head bolts—Fine pitch thread

Publish Date: 2025-10-31 Implement Date: 2026-02-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 5785-2025

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: 20 pages

Scope

本文件规定了A和B级细牙螺纹六角头螺栓的型式尺寸、技术要求、标志和标签及标记。
本文件适用于螺纹公称直径8 mm~64 mm,细牙螺纹,性能等级为8.8、10.9、12.9/12.9、A2-50、A2-70、A4-50、A4-70、A4-80、D4-70、D4-80、D6-70、D6-80,产品等级为A级和B级,钢和不锈钢制六角头螺栓(以下简称“螺栓”)。

Development Information

Drafting Units:

雁栖湖基础制造技术研究院(北京)有限公司、山东高强紧固件有限公司、宁波群力紧固件制造有限公司、上海高强度螺栓厂有限公司、浙江海力股份有限公司

Word Count: 27 Thousand words Pages: 20 pages

Replace the following standards

GB/T 5785-2016 Hexagon head bolts—Fine pitch thread

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 3098.23-2020 Mechanical properties of fasteners—M42～M72 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 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 5779.3-2000 Fasteners—Surface discontinuities—Bolts,screws and studs for special requirements GB/T 9144-2003 General purpose metric screw threads—Preferable plan GB/T 9144-2025 General purpose metric screw threads—Preferable plan 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 8765:2022

Related Standards

GB/T 3750.3-1983 Replaced

GB/T 3750.3-1983 Hollow screws

Publish Date: 1983-06-17

GB/T 5277-1985 Active

GB/T 5277-1985 Fasteners—Clearance holes for bolts and screws

Publish Date: 1985-08-01

GB/T 6560-1986 Replaced

GB/T 6560-1986 Cross recessed pan head thread forming screws

Publish Date: 1986-07-02

GB/T 6561-1986 Replaced

GB/T 6561-1986 Cross recessed countersunk head thread forming screws

Publish Date: 1986-07-02

GB/T 6562-1986 Replaced

GB/T 6562-1986 Cross recessed raised countersunk head thread forming screws

Publish Date: 1986-07-02

GB/T 6563-1986 Replaced

GB/T 6563-1986 Hexagon head thread forming screws

Publish Date: 1986-07-02