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M12 DIN 557 square nut envelope (second table variant)
M12 DIN 557 square nut envelope (second table variant): 19 × 19 mm square (s), 10 mm thick (m), plain Ø12 bore at the thread major; corners are square, so the corner distance is 26.9 mm against the printed e max 26.9; 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 | M12 |
|---|---|
| P (mm) | 1.75 |
| s (square side) | 18 |
| e max (across corners) | 25.4 |
| m (thickness) | 10 |
| mw min | 6.6 |
| dw min | 16.5 |
| CDE F / G / H | — |
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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?