Metric Black Oxide Hex Nut
Black Oxide
Various sizes:
M4 - Width Across Flats: 7 mm
M5 - Width Across Flats: 8 mm
M6 - Width Across Flats: 10 mm
M8 - Width Across Flats: 13 mm
M10 - Width Across Flats: 17 mm
M12 - Width Across Flats: 19 mm
M14 - Width Across Flats: 22 mm
Specification: DIN 934