DIN 125 / ISO 7089 plain washer: dimensions from M3 to M24
Plain washer, normal series, product grade A, from M3 to M24. Pick a size to get its dimensions and CAD files.
ISO 7089 / DIN 125 washer dimensions
| Size | d1min, mm | d2max, mm | hnom, mm |
|---|---|---|---|
| M3 | 3.2 | 7 | 0.5 |
| M4 | 4.3 | 9 | 0.8 |
| M5 | 5.3 | 10 | 1 |
| M6 | 6.4 | 12 | 1.6 |
| M8 | 8.4 | 16 | 1.6 |
| M10 | 10.5 | 20 | 2 |
| M12 | 13 | 24 | 2.5 |
| M14 | 15 | 28 | 2.5 |
| M16 | 17 | 30 | 3 |
| M18 | 19 | 34 | 3 |
| M20 | 21 | 37 | 3 |
| M22 | 23 | 39 | 3 |
| M24 | 25 | 44 | 4 |
Dimensions in millimetres unless stated. Select a row to load its CAD files above.
ISO 7089 and DIN 125
For the sizes on this page, ISO 7089 and DIN 125 form A have the same inner diameter, outer diameter and thickness. Both are the washer without a chamfer; the chamfered version is ISO 7090, and DIN 125 form B.
DIN 125 washer dimensions and the bolt head
The outside diameter of the normal washer is about twice the bolt size, enough to cover the bearing face of a hex head or nut: at M6 it is 12 mm across with a 6.4 mm hole, 1.6 mm thick. For soft materials or oversized holes, the large ISO 7093 washer spreads the load further. The metric washer size chart compares both with the heavy and the spring washer.
DIN 125 washers: common questions
- What are the dimensions of an M6 washer?
- An ISO 7089 or DIN 125 A M6 washer has a hole of at least 6.4 mm, an outside diameter of up to 12 mm and a thickness of 1.6 mm.
- What is the difference between DIN 125 A and DIN 125 B?
- Form A is the plain washer and form B has a chamfer on the outside edge. In ISO they are 7089 and 7090.