Hex with flange
Round head
Countersunk head
Raised countersunk head
Hex with collar
Round head with collar
Bugle head
GB/T 15856.1-2002
Cross recessed pan head drilling screws with tapping screw thread-type Z
ISO 15481-1999
Cross recessed round head self-drilling and tapping screws-type Z
JIS B1124-2.1-2003
Cross recessed round head with type Z self-drilling and tapping screws-Table 2.1
JIS B1125-2-1995
Cross recessed pan head with type Z self-drilling and tapping screws-Table 2
NF E25-857-1999
Cross recessed round head self-drilling and tapping screws-type Z
GB/T 15856.1-1995
Cross recessed pan head drilling screws with tapping screw thread-type Z
JIS B1124-2-2015
Cross recessed round head with type Z self-drilling and tapping screws-Table 2
JIS B1124-2-2021
Cross recessed round head with type Z self-drilling and tapping screws-Table 2
