Standard BS 4174 11
80° Recess truncated countersunk head screws, ...
| Dimensions in mm - source BS 4174 Table 11 80° Recess truncated countersunk head screws, type Z: Publication date: 10 - 1972 | ||||||||
| Ø thread size | dk min | dk max | k min | k max | t min | t max | m nom | recess nr. |
| ST 2.2 | 3.73 | 4.37 | 0.71 | 0.91 | 1.02 | 1.42 | 2.21 | 1 |
| ST 2.9 | 4.95 | 5.71 | 0.96 | 1.19 | 1.57 | 1.98 | 2.77 | 1 |
| ST 3.5 | ||||||||
| ST 4.2 | ||||||||
| ST 4.8 | ||||||||
| ST 5.5 | ||||||||
| ST 6.3 | ||||||||
| ST 8 | ||||||||