DIN 916 / ISO 4029 cup point set screw: dimensions
Hexagon socket set screw with cup point, from M3 to M24.
DIN 916 / ISO 4029 set screw dimensions
| Size | Pmm | snom, mm | emin, mm | tmin, mm | tshort l, mm | dzmax, mm |
|---|---|---|---|---|---|---|
| M3 | 0.5 | 1.5 | 1.73 | 2 | 1.2 | 1.4 |
| M4 | 0.7 | 2 | 2.3 | 2.5 | 1.5 | 2 |
| M5 | 0.8 | 2.5 | 2.87 | 3 | 2 | 2.5 |
| M6 | 1 | 3 | 3.44 | 3.5 | 2 | 3 |
| M8 | 1.25 | 4 | 4.58 | 5 | 3 | 5 |
| M10 | 1.5 | 5 | 5.72 | 6 | 4 | 6 |
| M12 | 1.75 | 6 | 6.86 | 8 | 4.8 | 8 |
| M16 | 2 | 8 | 9.15 | 10 | 6.4 | 10 |
| M20 | 2.5 | 10 | 11.43 | 12 | 8 | 14 |
| M24 | 3 | 12 | 13.72 | 15 | 10 | 16 |
Dimensions in millimetres unless stated. Select a row to load its CAD files above.
DIN 916 socket depth
The set screw is threaded over its whole length and the length includes the point. The socket is less deep in the shortest lengths of each size; the table gives both depths.
DIN 916 cup point dimensions
The cup point has a sharp-edged hollow of diameter dz that bites into the shaft, which is why it is the usual set screw for pulleys and collars on round shafts. At M8 the cup is up to 5 mm across and the screw takes a 4 mm key.