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Thick washers, DIN 7349: M3–M30 bore, outside diameter, thickness
What bore, outside diameter and thickness does a DIN 7349 thick washer have for M3 to M30? · Standard part · basis: KIPP K1968 DIN 7349 table (D1, D2, H), cross-checked against norelem 07305-05 and Würth / Kramp DIN 7349 listings
Also called: din 7349 dimensions, thick washer m8 21 mm, heavy washer m12 6 mm thick, washer for heavy spring pin, m10 thick washer
Exact dimensions. Every file is drawn at true size with no tolerance added. The holes and pins that meet another part are listed below under Mating features, with the fit each joint needs; open those by your process's clearance before making the part. Mating features
- sizes
- 14 in table
Notes
- Columns: thread, bore d1, outside diameter d2, thickness s. KIPP and norelem list identical values (e.g. M8: 8.4 × 21 × 4).
- Used under bolts with heavy-duty spring pins (DIN 1481). M18 is not drawn here.
Thick washers, DIN 7349: M3–M30 bore, outside diameter, thickness size chart
| thread | d1 | d2 | s |
|---|---|---|---|
| M3 | 3.2 | 9 | 1 |
| M4 | 4.3 | 12 | 1.6 |
| M5 | 5.3 | 15 | 2 |
| M6 | 6.4 | 17 | 3 |
| M8 | 8.4 | 21 | 4 |
| M10 | 10.5 | 25 | 4 |
| M12 | 13 | 30 | 6 |
| M14 | 15 | 36 | 6 |
| M16 | 17 | 40 | 6 |
| M20 | 21 | 44 | 8 |
| M22 | 23 | 50 | 8 |
| M24 | 25 | 50 | 10 |
| M27 | 28 | 60 | 10 |
| M30 | 31 | 68 | 10 |
Mating features
Drawn at the exact size. Open press, slide, run and socket features by your process's clearance (tolerances by process); leave designed gaps and clamp fits as drawn.
| feature | exact | mates with | fit | files |
|---|---|---|---|---|
| bore | d1: 3.2 (M3) to 31 (M30); M8 8.4 | bolt shank; bolts with heavy spring pins DIN 1481 | designed | all |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| KIPP (via Marek) | K1968 washers DIN 7349: D1, D2, H | web | Publisher's page; dimensions are facts |
| norelem (via Marek) | 07305-05 washers DIN 7349 | web | Publisher's page; dimensions are facts |
Free files
★ Free files 14 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
| din7349-m3 | DIN 7349 M3: 3.2 × Ø9 × 1 | STEP · STL |
| din7349-m4 | DIN 7349 M4: 4.3 × Ø12 × 1.6 | STEP · STL |
| din7349-m5 | DIN 7349 M5: 5.3 × Ø15 × 2 | STEP · STL |
| din7349-m6 | DIN 7349 M6: 6.4 × Ø17 × 3 | STEP · STL |
| din7349-m8 | DIN 7349 M8: 8.4 × Ø21 × 4 | STEP · STL |
| din7349-m10 | DIN 7349 M10: 10.5 × Ø25 × 4 | STEP · STL |
| din7349-m12 | DIN 7349 M12: 13 × Ø30 × 6 | STEP · STL |
| din7349-m14 | DIN 7349 M14: 15 × Ø36 × 6 | STEP · STL |
| din7349-m16 | DIN 7349 M16: 17 × Ø40 × 6 | STEP · STL |
| din7349-m20 | DIN 7349 M20: 21 × Ø44 × 8 | STEP · STL |
| din7349-m22 | DIN 7349 M22: 23 × Ø50 × 8 | STEP · STL |
| din7349-m24 | DIN 7349 M24: 25 × Ø50 × 10 | STEP · STL |
| din7349-m27 | DIN 7349 M27: 28 × Ø60 × 10 | STEP · STL |
| din7349-m30 | DIN 7349 M30: 31 × Ø68 × 10 | STEP · STL |
https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.Plain text: sheet.txt · JSON: /api/geometry?object=thick-washers-din-7349
Fits with
Questions
How thick is an M8 DIN 7349 washer?
4 mm: 8.4 mm bore, 21 mm outside.
What is DIN 7349 used for?
Bolts with heavy-duty spring pins (DIN 1481) and other joints that need a stiffer, thicker washer than DIN 125.