This standard specifies countersunk flat head screws with type H and Z cross recess, which of property class 4.8 and A-grade product grade with thread of M1.6~M10.
Other technical requirements shall be selected from current standard (such as GB/T 196, GB/T 3098.1, and GB/T 3106) when they are necessary.
This standard specifies countersunk flat head screws with type H and Z cross recess, which of property class 4.8 and A-grade product grade with thread of M1.6~M10.
Other technical requirements shall be selected from current standard (such as GB/T 196, GB/T 3098.1, and GB/T 3106) when they are necessary.