ISO 7380-2 flanged button head screw: dimensions
Button head socket screw with an integral collar under the head, which spreads the load like a washer.
ISO 7380-2 dimensions
| Size | Pmm | dkmax, mm | dcmax, mm | kmax, mm | cmax, mm | snom, mm | tmin, mm |
|---|---|---|---|---|---|---|---|
| M4 | 0.7 | 7.2 | 9.4 | 2.2 | 0.8 | 2.5 | 1.3 |
| M5 | 0.8 | 8.8 | 11.8 | 2.75 | 1 | 3 | 1.56 |
| M6 | 1 | 10 | 13.6 | 3.3 | 1.2 | 4 | 2.08 |
| M8 | 1.25 | 13.2 | 17.8 | 4.4 | 1.5 | 5 | 2.6 |
| M10 | 1.5 | 16.5 | 21.9 | 5.5 | 2 | 6 | 3.12 |
Dimensions in millimetres unless stated. Select a row to load its CAD files above.
ISO 7380-2 flanged button head screw dimensions
The collar of diameter dc and thickness c spreads the load like a built-in washer. At M6 the head is up to 10 mm across and the collar up to 13.6 mm, with a 4 mm key. The plain version without collar is ISO 7380-1.
ISO 7380-2 screws: common questions
- Does an ISO 7380-2 screw need a washer?
- Usually not on metal: the collar does that job. On soft materials a larger washer may still be needed.