GB/T 2673.2-2020 (English Version) PDF

Standard No.: GB/T 2673.2-2020
Language: Chinese, Available in English version
Release Date: 2020
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 2673.2-2020

Scope: This part of GB/T 2673 specifies the type dimensions, technical conditions and marks of hexagonal socket high countersunk head screws, as well as the gauge dimensions for controlling the height of the head. This part applies to hexagonal socket high countersunk head screws with thread specifications M3~M10, property grades 4.8, 8.8 and 10.9, and product grade A. Note 1: Compared with ordinary countersunk head screws, the height of the head is slightly increased so that the screws have full load-bearing capacity in accordance with GB/T 3098.1. Note 2: Due to the increased head height, the screws specified in this section are not fully interchangeable with other metric countersunk screws. The counterbore of assembly parts also needs to be compared with GB/T152.2

GB/T 2673.2-2020 Referenced Document

GB/T 1237 Designation system for fasteners
GB/T 2 Fasteners.Ends of parts with external thread
GB/T 3098.1 Mechanical properties of fasteners.Blots, screws and studs
GB/T 3103.1 Tolerances for fasteners--Bolts,screws,studs and nuts
GB/T 5267.1 Fastener Plating*， 2023-05-23 Update
GB/T 5267.2 Fasteners—Non-electrolytically applied zinc flake coatings*， 2021-12-31 Update
GB/T 5267.3 Fasteners.Hot dip galvanized coatings
GB/T 90.1 Fasteners—Acceptance inspection*， 2023-05-23 Update
GB/T 90.2 Fasteners--Marking and packaging