ISO 10642 countersunk socket head screw: dimensions and CAD files
Hexagon socket countersunk head screw with a 90° head. The length is measured including the head.
ISO 10642 countersunk screw dimensions
| Size | Pmm | dkmax, mm | kmax, mm | snom, mm | emin, mm | tmin, mm |
|---|---|---|---|---|---|---|
| M3 | 0.5 | 6.72 | 1.86 | 2 | 2.303 | 1.1 |
| M4 | 0.7 | 8.96 | 2.48 | 2.5 | 2.873 | 1.4 |
| M5 | 0.8 | 11.2 | 3.1 | 3 | 3.443 | 1.75 |
| M6 | 1 | 13.44 | 3.72 | 4 | 4.583 | 2.2 |
| M8 | 1.25 | 17.92 | 4.96 | 5 | 5.723 | 2.9 |
| M10 | 1.5 | 22.4 | 6.2 | 6 | 6.863 | 3.5 |
| M12 | 1.75 | 26.88 | 7.44 | 8 | 9.149 | 4.3 |
| M16 | 2 | 33.6 | 8.8 | 10 | 11.429 | 4.8 |
| M20 | 2.5 | 40.32 | 10.16 | 12 | 13.716 | 5.6 |
Dimensions in millimetres unless stated. Select a row to load its CAD files above.
ISO 10642 and DIN 7991
DIN 7991 is not the same part: its head is smaller and lower, the socket depth is different and M22 and M24 have a 60° head. Several catalogues publish the DIN 7991 table under the ISO 10642 name, so check which one your supplier means. The files on this page follow ISO 10642.
ISO 10642 countersunk screw length and head
The length is measured including the head, because the head ends flush with the surface. The head diameter dk in the table is the theoretical maximum, at the sharp edge of the 90° cone; the countersink in the part has to be at least that wide. At M6 that is 13.44 mm, with a 4 mm key.
ISO 10642 and DIN 7991: common questions
- Can I use an ISO 10642 screw in a countersink made for DIN 7991?
- Not without checking: the ISO 10642 head is larger, so it may stand proud of a countersink cut for the DIN head.