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Combined Nut/Washer


Thread size Pitch Thickness Washer Diameter Across Flats
M3 0.5 3.1 6.6 5.5
M4 0.7 3.4 8.8 7.0
M5 0.8 5.2 9.8 7.9
M6 1.0 6.0 13.0 10.0
M8 1.25 8.0 17.0 13.0
M10 1.50 9.5 22.0 17.0
M12 1.75 14.5 27.0 19.0
M16 2.0 19.5 39.0 24.0
M20 2.5 18.0 42.0 30.0
Thread size Pitch Thickness Washer Diameter Across Flats
M12 1.75 17.5 39.0 19.0