Email Facebook Twitter Google LinkedIn Whatsapp Share

CSN 21740 - Spring lock washer for cylinder head screws

Equivalent Standards

CSN 21740

Dimensions for CSN 21740 - Spring lock washer for cylinder head screws

Nominal d1 d2 s h r Mass (7,85 kg/dm3)
per 1000units in kg
For thread size
min. max. max. Limit min. max.
3 3.1 3.4 5.6 1 ±0.1 2 2.36 0.2 0.105 M3
3.5 3.6 3.9 6.1 1 ±0.1 2 2.36 0.2 0.114 M3.5
4 4.1 4.4 7 1.2 ±0.1 2.4 2.83 0.2 0.195 M4
5 5.1 5.4 8.8 1.6 ±0.1 3.2 3.78 0.2 0.37 M5
6 6.1 6.5 9.9 1.6 ±0.1 3.2 3.78 0.3 0.425 M6
8 8.1 8.5 12.7 2 ±0.1 4 4.72 0.5 1.05 M8
10 10.2 10.7 16 2.5 ±0.15 5 5.9 0.8 1.96 M10
12 12.2 12.7 18 2.5 ±0.15 5 5.9 0.8 2.28 M12
14 14.2 14.7 21.1 3 ±0.2 6 7.1 1 3.8 M14
16 16.2 17 24.4 3.5 ±0.2 7 8.25 1 5.94 M16
18 18.2 19 26.4 3.5 ±0.2 7 8.25 1 6.6 M18
20 20.2 21.2 30.6 4.5 ±0.2 9 10.6 1 12.3 M20
22 22.5 23.5 32.9 4.5 ±0.2 9 10.6 1 13.6 M22
24 24.5 25.5 35.9 5 ±0.2 10 11.8 1.6 18.1 M24
27 27.5 28.5 38.9 5 ±0.2 10 11.8 1.6 20.6 M27
30 30.5 31.7 44.1 6 ±0.2 12 14.2 1.6 32 M30
33 33.5 34.7 47.1 6 ±0.2 12 14.2 1.6 35 M33
36 36.5 37.7 52.2 7 ±0.25 14 16.5 1.6 52.5 M36
42 42.5 43.7 60.2 8 ±0.25 16 18.9 2 80 M42
48 49 50.5 67 8 ±0.25 16 18.9 2 90 M48