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CSN 21745

CSN 21745

Dimensions for CSN 21745 - Serrated lock washers, Forma I - external

Nominal Size d1 d2 s1 Min. number of teeth Weight
kg/1000pcs		 For Thread
Nominal Size –
Min		 Max Nominal Size –
Max		 Min
1.7 1.7 1.84 3.6 3.3 0.3 9 0.02 M1.6
2.2 2.2 2.34 4.5 4.2 0.3 9 0.03 M2
2.7 2.7 2.84 5.5 5.2 0.4 9 0.045 M2.5
3.2 3.2 3.38 6 5.7 0.4 9 0.06 M3
3.7 3.7 3.88 7 6.64 0.5 10 0.11 M3.5
4.3 4.3 4.48 8 7.64 0.5 11 0.14 M4
5.3 5.3 5.48 10 9.64 0.6 11 0.26 M5
6.4 6.4 6.62 11 10.57 0.7 12 0.36 M6
7.4 7.4 7.62 12.5 12.07 0.8 14 0.5 M7
8.4 8.4 8.62 15 14.57 0.8 14 0.8 M8
10.5 10.5 10.77 18 17.57 0.9 16 1.25 M10
13 13 13.27 20.5 19.98 1 16 1.6 M12
15 15 15.27 24 23.48 1 18 2.3 M14
17 17 17.27 26 25.48 1.2 18 2.9 M16
19 19 19.33 30 29.48 1.4 18 5 M18
21 21 21.33 33 32.38 1.4 20 6 M20
23 23 23.33 36 35.38 1.5 20 7.5 M22
25 25 25.33 38 37.38 1.5 20 8 M24
28 28 28.33 44 43.38 1.6 22 12 M27
31 31 31.39 48 47.38 1.6 22 14 M30
Thread d p c da dw e m mw s
non-preferred threads max min max min min min max min min nominal = max min
M3.5 0.6 0.40 0.15 4.00 3.50 5.00 6.58 2.80 2.55 2.00 6.00 5.82
M14 2 0.60 0.15 15.10 14.00 19.60 23.36 12.80 12.10 9.70 21.00 20.67
M18 2.5 0.80 0.20 19.50 18.00 24.90 29.56 15.80 15.10 12.10 27.00 26.16
M22 2.5 0.80 0.20 23.70 22.00 31.40 37.29 19.40 18.10 14.50 34.00 33.00
M27 3 0.80 0.20 29.10 27.00 38.00 45.20 23.80 22.50 18.00 41.00 40.00
M33 3.5 0.80 0.20 35.60 33.00 46.60 55.37 28.70 27.40 21.90 50.00 49.00
M39 4 1.00 0.30 42.10 39.00 55.90 66.44 33.40 31.80 25.40 60.00 58.80
M45 4.5 1.00 0.30 48.60 45.00 64.70 76.95 36.00 34.40 27.50 70.00 68.10
M52 5 1.00 0.30 56.20 52.00 74.20 88.25 42.00 40.40 32.30 80.00 78.10
M60 5.5 1.00 0.30 64.80 60.00 83.40 99.21 48.00 46.40 37.10 90.00 87.80