This standard specifies cross recessed cylindrical head screws with thread specifications M2.5 ~ M8, performance grades 4.8, 5.8, A2-70, CU2, CU3 and AL4, H and Z cross recesses, and product grade A. . Note: The head size of this screw is the same as that of GB/T 65 screw. If other technical requirements are required, they should be selected from current standards (such as GB/T 196, GB/T 3106, GB/T 3098.1, GB/T 3098.6 and GB/T 3098.10).
GB/T 822-2000 history
2016GB/T 822-2016 Cheese head screws with cross recess
2000GB/T 822-2000 Cheese head screws with cross recess