Round head
Countersunk head
Raised countersunk head
Round head with collar
Undercut countersunk head
Raised Undercut countersunk head
Low cheese head
Raised cheese
GB/T 818-2016
Pan head screws with type H cross recess
GB/T 823-2016
Small pan head screws with cross recess
GB/T 818-2016
Pan head screws with type Z cross recess
GB 973-1976
Crosss recessed mushroom screws
GB/T 819.1-2016
Countersunk flat head screws with type H cross recess
GB/T 819.1-2016
Countersunk flat head screws with type Z cross recess
GB/T 819-1985
Countersunk flat head screws with type H cross recess
GB/T 819-1985
Countersunk flat head screws with type Z cross recess
GB/T 819.2-2016
Countersunk flat head screws with type H cross recess(deep)
GB/T 819.2-2016
Countersunk flat head screws with type Z cross recess(deep)
GB/T 819.2-2016
Countersunk flat head screws with type H cross recess(shallow)
GB/T 819.2-2016
Countersunk flat head screws with type Z cross recess(shallow)
GB/T 13806.1-1992
Cross recessed cheese head screws for precision -Table1
GB/T 13806.1-1992
Cross recessed countersunk head screws for precision -Table2
GB/T 13806.1-1992
Cross recessed raised countersunk head screws for precision -Table3
GB 819-1976
Countersunk flat head screws cross recess
GB 818-1976
Cross recessed pan head screws
GB/T 818-1985
Pan head screws with type Z cross recess
GB/T 818-1985
Pan head screws with type H cross recess
GB/T 818-2000
Pan head screws with type H cross recess
