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M5 DIN 557 square nut envelope
M5 DIN 557 square nut envelope: 8 × 8 mm square (s), 4 mm thick (m), plain Ø5 bore at the thread major; corners are square, so the corner distance is 11.3 mm against the printed e max 11.3; no chamfer or thread
Exact dimensions. True size, no tolerance added. Threads are plain cylinders at the major diameter.
STEP STL free, CC BY 4.0 (credit "Xem Studio")
Dimensions
| thread | M5 |
|---|---|
| P (mm) | 0.8 |
| s (square side) | 8 |
| e max (across corners) | 11.3 |
| m (thickness) | 4 |
| mw min | 2.5 |
| dw min | 6.7 |
| CDE F / G / H | 8 / 11.3 / 4 |
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Square nuts, DIN 557: M5–M20 width across flats, thickness, corner distance + 8 envelope files: every size, notes, mating features and sources. What are the dimensions of a DIN 557 square nut, and how big a slot does an M6 square nut need?