GB/T 2673.2-2020
Hexalobular socket high countersunk head screws
- Standard No.
- GB/T 2673.2-2020
- Language
- Chinese
- Release Date
- 2020
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Lastest
- 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 1237-2000 Designation system for fasteners
- GB/T 193 General purpose metric screw threads--General plan
- GB/T 193-2003 General purpose metric screw threads--General plan
- GB/T 2 Fasteners.Ends of parts with external thread
- GB/T 2-2016 Fasteners.Ends of parts with external thread
- ISO 3269:2000 Fasteners - Acceptance inspection
- ISO 4759-1:2000 Tolerances for fasteners - Part 1: Bolts, screws, studs and nuts - Product grades A, B and C
- ISO 8991:1986 Designation system for fasteners
GB/T 2673.2-2020 history
- 2020 GB/T 2673.2-2020 Hexalobular socket high countersunk head screws