GB/T 70.3-2023 Active National standards

GB/T 70.3-2023 Hexagon socket countersunk head screws with reduced loadability

GB/T 70.3-2023 Hexagon socket countersunk head screws with reduced loadability

Publish Date: 2023-05-23 Implement Date: 2023-12-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us
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Basic Information

Standard Code: GB/T 70.3-2023
Standard Type: National standards
Standard Status: Active
is_force_gb: no
CCS Name: Fasteners
ICS Name: Bolts, screws, and studs
Publish Date: 2023-05-23
Implement Date: 2023-12-01
Pages: 15 pages

Scope

This document specifies the type dimensions, technical requirements, marking labels, and markings of hexagonal countersunk screws with reduced bearing capacity due to their head design. This document is applicable to hexagonal countersunk screws with thread specifications of M2 to M20, coarse thread, performance grades of 8.8, 10.9, and 12.9, and group and performance grades of A250, A450, A270, A470, A280, and A480, and product grades of A.

Development Information

Word Count: 31 Thousand words Pages: 15 pages

Replace the following standards

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 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 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 10642:2019

Related Standards

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