ISO 4032

ISO 4032

ISO 4032 hexagon lock nut with optional washer face


Across Flat Overall
Thickness		 Countersink
Diameter		 Bearing
Diameter		 Washer
Thickness		 Across
Corner
d s h da dw c e

max
(nom)		 min max
(nom)		 min min max min max min min
M3 5.5 5.32 2.4 2.15 3 3.45 4.6 0.4 0.15 6.01
M4 7 6.78 3.2 2.9 4 4.6 5.9 0.4 0.15 7.66
M5 8 7.78 4.7 4.4 5 5.75 6.9 0.5 0.15 8.79
M6 10 9.78 5.2 4.9 6 6.75 8.9 0.5 0.15 11.05
M8 13 12.73 6.8 6.44 8 8.75 11.6 0.6 0.15 14.38
M10 16 15.73 8.4 8.04 10 10.8 14.6 0.6 0.15 17.77
M12 18 17.73 10.8 10.37 12 13 16.6 0.6 0.15 20.03
(M14) 21 20.67 12.8 12.1 14 15.1 19.6 0.6 0.15 23.35
M16 24 23.67 14.8 14.1 16 17.3 22.5 0.8 0.2 26.75
(M18) 27 26.16 15.8 15.1 18 19.5 24.9 0.8 0.2 29.56
M20 30 29.16 18 16.9 20 21.6 27.7 0.8 0.2 32.95
(M22) 34 33 19.4 16.9 22 23.7 31.4 0.8 0.2 37.29
M24 36 35 21.5 20.2 24 25.9 33.3 0.8 0.2 39.55
(M27) 41 40 23.8 20.7 27 29.1 38 0.8 0.2 45.2
M30 46 45 25.6 24.3 30 32.4 42.8 0.8 0.2 50.85
(M33) 50 49 28.7 24.7 33 35.6 46.6 0.8 0.2 55.37
M36 55 53.8 31 29.4 36 38.9 51.1 0.8 0.2 60.79
(M39) 60 58.8 33.4 29.4 39 42.1 55.9 1 0.3 66.44
M42 65 63.1 34 32.4 42 45.4 60 1 0.3 71.3
(M45) 70 68.1 36 34.4 45 48.6 64.7 1 0.3 76.95
M48 75 73.1 38 36.4 48 51.8 69.5 1 0.3 82.6
(M52) 80 78.1 42 40.4 52 56.2 74.2 1 0.3 88.25
M56 85 82.8 45 43.4 56 60.5 78.7 1 0.3 93.56
(M60) 90 87.8 48 46.4 60 64.8 83.4 1 0.3 99.21
M64 95 92.8 51 49.1 64 69.1 88.2 1 0.3 104.86

Sizes in brackets are non preferred sizes and should be avoided if possible.

The washer face is optional.