BS 1981-4-2017
80°Slotted countersunk head screws-Table 4
BS 1981-5-2004
80° Countersunk flat head screws with type Z cross recess-Table 5
BS 1981-5-2012
80° Countersunk flat head screws with type Z cross recess-Table 5
BS 1981-5-2017
80° Countersunk flat head screws with type Z cross recess-Table 5
BS 1981-6-2004
80°Slotted countersunk head screws(truncated)-Table 6
BS 1981-6-2012
80°Slotted countersunk head screws(truncated)-Table 6
BS 1981-6-2017
80°Slotted countersunk head screws(truncated)-Table 6
BS 1981-2004
80° Countersunk flat head screws with type Z cross recess(truncated)-Table 7
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 1981-8-2004
80°Slotted Countersunk raised head screws-Table 8
BS 1981-8-2012
80°Slotted Countersunk raised head screws-Table 8
BS 1981-8-2017
80°Slotted Countersunk raised head screws-Table 8
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 1981-10-2004
80°Slotted Countersunk raised head screws(truncated)-Table 10
BS 1981-10-2012
80°Slotted Countersunk raised head screws(truncated)-Table 10
BS 1981-10-2017
80°Slotted Countersunk raised head screws(truncated)-Table 10
BS 1981-11-2004
80°Countersunk raised head screws with type Z cross recess(truncated)-Table 11