Round head
Countersunk head
Raised countersunk head
Round head with collar
Undercut countersunk head
Raised Undercut countersunk head
Low cheese head
Raised cheese
BS 1981-7-2012
80° Countersunk flat head screws with type Z cross recess(truncated)-Table 7
BS 1981-7-2017
80° Countersunk flat head screws with type Z cross recess(truncated)-Table 7
BS 1981-9-2004
80°Countersunk raised head screws with type Z cross recess-Table 9
BS 1981-9-2012
80°Countersunk raised head screws with type Z cross recess-Table 9
BS 1981-9-2017
80°Countersunk raised head screws with type Z cross recess-Table 9
BS 1981-11-2004
80°Countersunk raised head screws with type Z cross recess(truncated)-Table 11
BS 1981-11-2012
80°Countersunk raised head screws with type Z cross recess(truncated)-Table 11
BS 1981-11-2017
80°Countersunk raised head screws with type Z cross recess(truncated)-Table 11
BS 1981-13-2004
Pan head screws with type Z cross recess-Table 13
BS 1981-13-2012
Pan head screws with type Z cross recess-Table 13
BS 1981-13-2017
Pan head screws with type Z cross recess-Table 13
BS 1981-15-2004
Recessed raised cheese head screws with type Z cross recess-Table 15
BS 1981-15-2012
Recessed raised cheese head screws with type Z cross recess-Table 15
BS 1981-15-2017
Recessed raised cheese head screws with type Z cross recess-Table 15
ASME/ANSI B18.6.3-10-2013
Cross recessed undercut 80° countersunk head screws-Table 10
ASME/ANSI B18.6.3-10-2013
Cross recessed undercut 80° countersunk head screws-Table 10
ASME/ANSI B18.6.3-12-2013
Cross recessed undercut 80° oval countersunk head screws-Table 12
ASME/ANSI B18.6.3-12-2013
Cross recessed undercut 80° oval countersunk head screws-Table 12
ASME/ANSI B18.6.3-14-2013
Cross recessed 80° countersunk trim head screws-Table 14
ASME/ANSI B18.6.3-14-2013
Cross recessed 80° big countersunk trim head screws-Table 14
