This standard specifies hexagonal socket head countersunk head screws with thread specifications from M2 to M10, performance grades 4.8, A2-70, A3-70, CU2 and CU3, and product grade A. If other technical requirements are required, they should be selected from current standards (such as GB/T 193, GB/T 9145, GB/T 3106, GB/T 3098.1, GB/T 3098.6 and GB/T 3103.1).
GB/T 2674-2004 history
2017GB/T 2674-2017 Hexalobular socket raised countersunk head screws
2004GB/T 2674-2004 Hexalobular socket raised countersunk head screws
1986GB/T 2674-1986 Hexagon lobular socket raised countersunk head screws