DIN 6921 hex flange screw: dimensions from M5 to M16
Hexagon head screw with an integral flange under the head, from M5 to M16.
DIN 6921 flange bolt dimensions
| Size | Pmm | snom, mm | kmax, mm | dcmax, mm | cmin, mm | emin, mm | bl ≤ 125, mm |
|---|---|---|---|---|---|---|---|
| M5 | 0.8 | 8 | 5.4 | 11.8 | 1 | 8.71 | 16 |
| M6 | 1 | 10 | 6.6 | 14.2 | 1.1 | 10.95 | 18 |
| M8 | 1.25 | 13 | 8.1 | 18 | 1.2 | 14.26 | 22 |
| M10 | 1.5 | 15 | 9.2 | 22.3 | 1.5 | 16.5 | 26 |
| M12 | 1.75 | 16 | 11.5 | 26.6 | 1.8 | 17.62 | 30 |
| M16 | 2 | 21 | 14.4 | 35 | 2.4 | 23.15 | 38 |
Where ISO4162 differs from DIN 6921
| Size | sDIN 6921 | sISO4162 | kDIN 6921 | kISO4162 | dcDIN 6921 | dcISO4162 |
|---|---|---|---|---|---|---|
| M5 | 8 | 8 | 5.4 | 6.2 | 11.8 | 11.8 |
| M6 | 10 | 10 | 6.6 | 7.3 | 14.2 | 14.2 |
| M8 | 13 | 13 | 8.1 | 9.4 | 18 | 17.9 |
| M10 | 15 | 15 | 9.2 | 11.4 | 22.3 | 21.8 |
| M12 | 16 | 18 | 11.5 | 13.8 | 26.6 | 26 |
| M16 | 21 | 24 | 14.4 | 18.3 | 35 | 34.5 |
ISO4162 is withdrawn but parts to it are still sold. Only the sizes listed here differ; in every other size both standards give the same part. Pick the standard in the selector above to get the matching CAD files.
Dimensions in millimetres unless stated. Select a row to load its CAD files above.
DIN 6921 and ISO 4162
ISO 4162 has a taller head and a larger flange, and in M12 and M16 a different width across flats (18 and 24 mm). Those sizes have their own ISO 4162 files under the table.
Flange bolt dimensions
The flange of diameter dc replaces a washer under the head. At M8 the DIN 6921 screw is 13 mm across flats with a head 8.1 mm high and a flange up to 18 mm across. The matching nut is the DIN 6923 flange nut.