Standard BS 4174 14
80° slotted truncated raised countersunk head ...

Dimensions in mm - source BS 4174 Table 14 80° slotted truncated raised countersunk head tapping screws: Publication date: 10 - 1972 | ||||||||
Ø thread size | dk min | dk mx | k max | k min | t nom | n min | n max | f nom |
ST 2.2 | 3.73 | 4.37 | 0.91 | 0.71 | 0.94 | 0.58 | 0.79 | 0.64 |
ST 2.9 | 4.95 | 5.71 | 1.19 | 0.96 | 1.22 | 0.79 | 0.99 | 0.84 |
ST 3.5 | ||||||||
ST 4.2 | ||||||||
ST 4.8 | ||||||||
ST 5.5 | ||||||||
ST 6.3 | ||||||||
ST 8 |