Nut: square
DIN 557
DIN 557 - Fasteners - Square nuts - Product grade C
Automatically build standard products in SOLIDWORKS with TSFP.
Square nuts with a greater height than DIN 562 thin square nuts and a chamfer on one face. DIN 557:2026-02 specifies product grade C, coarse metric threads M5–M16, in steel or stainless steel. Widths across flats are 17 mm for M10 and 19 mm for M12.
| Product | Thread diameter, mm | Thread pitch, mm | Width across flats, mm | Height, mm | Chamfer 1 | Chamfer arrangement | Minimum chamfer angle, ° | Maximum chamfer angle, ° | Minimum chamfer circle diameter, mm | Minimum wrenching height, mm |
|---|---|---|---|---|---|---|---|---|---|---|
| DIN 557 square nut M5 | 5 | 0.8 | 8 | 4 | 0 | single | 15 | 30 | 6.7 | 2.5 |
| DIN 557 square nut M6 | 6 | 1 | 10 | 5 | 0 | single | 15 | 30 | 8.7 | 3.2 |
| DIN 557 square nut M8 | 8 | 1.25 | 13 | 6.5 | 0 | single | 15 | 30 | 11.5 | 4.1 |
| DIN 557 square nut M10 | 10 | 1.5 | 17 | 8 | 0 | single | 15 | 30 | 15.5 | 5.2 |
| DIN 557 square nut M12 | 12 | 1.75 | 19 | 10 | 0 | single | 15 | 30 | 17.2 | 6.6 |
| DIN 557 square nut M16 | 16 | 2 | 24 | 13 | 0 | single | 15 | 30 | 22 | 8.6 |