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Two-hole nuts, DIN 547: M3–M10 outside diameter, height, pin-hole size, spacing and depth
What are the DIN 547 two-hole nut dimensions (outside diameter, height, pin holes and spacing) for M3 to M10? · Standard part · basis: fasteners.eu DIN 547 table (08/2006: d1, m, d2, e, t), cross-checked against fasten.it and spot checks of Aspen and AMF listings
Also called: din 547 dimensions, two hole nut m6, spanner nut m8 hole spacing, pin spanner nut m5, din 547 m10 hole depth
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
- 6 in table
Notes
- Columns: thread, outside diameter d1, height m, pin-hole diameter d2, pin-hole centre distance e, pin-hole depth t (min–max). The model uses the midpoint of t.
- Thread drawn as a plain bore at the major diameter.
Two-hole nuts, DIN 547: M3–M10 outside diameter, height, pin-hole… size chart
| thread | d1 | m | d2 | e | t min | t max |
|---|---|---|---|---|---|---|
| M3 | 8 | 2.5 | 1.5 | 5.5 | 1.3 | 1.7 |
| M4 | 10 | 3.5 | 1.5 | 7 | 1.8 | 2.2 |
| M5 | 12 | 4.2 | 2 | 8 | 2.3 | 2.7 |
| M6 | 14 | 5 | 2.5 | 10 | 2.8 | 3.2 |
| M8 | 18 | 6.5 | 3 | 13 | 3.3 | 3.8 |
| M10 | 22 | 8 | 3.5 | 15 | 3.8 | 4.3 |
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 |
|---|---|---|---|---|
| thread (plain bore at the major Ø) | M3 to M10 | ISO metric screw or stud of the same size | designed | all |
| 2 pin holes in the top face | d2 at spacing e (M6 Ø2.5 at 10, M10 Ø3.5 at 15) | face (pin) spanner, DIN 3116 | designed | all |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| fasteners.eu | DIN 547 round nuts with drilled holes in one face: m, dh, e, t | web | Publisher's page; dimensions are facts |
| fasten.it | DIN 547 round nuts with drilled holes in one face (08/2006) | web | Publisher's page; dimensions are facts |
Free files
★ Free files 6 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
| din547-m3 | DIN 547 M3: Ø8 × 2.5, two Ø1.5 holes 5.5 apart, 1.5 deep | STEP · STL |
| din547-m4 | DIN 547 M4: Ø10 × 3.5, two Ø1.5 holes 7 apart, 2.0 deep | STEP · STL |
| din547-m5 | DIN 547 M5: Ø12 × 4.2, two Ø2 holes 8 apart, 2.5 deep | STEP · STL |
| din547-m6 | DIN 547 M6: Ø14 × 5, two Ø2.5 holes 10 apart, 3.0 deep | STEP · STL |
| din547-m8 | DIN 547 M8: Ø18 × 6.5, two Ø3 holes 13 apart, 3.55 deep | STEP · STL |
| din547-m10 | DIN 547 M10: Ø22 × 8, two Ø3.5 holes 15 apart, 4.05 deep | 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=two-hole-nuts-din-547
Fits with
Questions
What are the pin holes on an M6 two-hole nut?
DIN 547 M6: two Ø2.5 mm holes 10 mm apart, about 2.8 to 3.2 mm deep, in a Ø14 × 5 mm nut.
What tool fits a DIN 547 nut?
A face (pin) spanner whose pins match the hole diameter and spacing, e.g. DIN 3116.