Hex chamfered single face
Flat round head
Cheese
Square
Hex with collar
T-head with shoulder
Hex chamfered double faces
BS 7670-1-4-1993
Unified screw hex nuts for resistance projection welding-Table 4
BS 7670-1-4-2004
Unified screw hex nuts for resistance projection welding-Table 4
BS 7670-1-4-2012
Unified screw hex nuts for resistance projection welding-Table 4
BS 7670-1-4-2017
Unified screw hex nuts for resistance projection welding-Table 4
