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Unit:mm

Double Coil Helical Spring Lock Washers - Type D

BS 4464 - 1969

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英标BS 4464 - 1969 BS4464 4464BS Double Coil Helical Spring Lock Washers - Type D
For thread diameter
M2 (M2.2) M2.5 M3 (M3.5) M4 M5 M6 M8 M10 M12 (M14) M16
d max
min
s Nominal Size
max
min
dc max
b Nominal Size
max
min
H ≈5s
2.4 2.6 2.9 3.6 4.1 4.6 5.6 6.6 8.8 10.8 12.8 15 17
2.1 2.3 2.6 3.3 3.8 4.3 5.3 6.3 8.4 10.4 12.4 14.5 16.5
0.5 0.6 0.7 0.8 0.8 0.8 0.9 1 1.2 1.2 1.6 1.6 2
0.55 0.65 0.8 0.9 0.9 0.9 1 1.1 1.3 1.3 1.7 1.7 2.1
0.45 0.55 0.6 0.7 0.7 0.7 0.8 0.9 1.1 1.1 1.5 1.5 1.9
4.4 4.8 5.5 6.2 7.5 8 9.8 12.9 15.1 18.2 20.2 25.4 27.4
0.9 1.0 1.2 1.2 1.6 1.6 2 3 3 3.5 3.5 5 5
1.0 1.1 1.3 1.3 1.7 1.7 2.1 3.15 3.15 3.7 3.7 5.2 5.2
0.8 0.9 1.1 1.1 1.5 1.5 1.9 2.85 2.85 3.3 3.3 4.8 4.8
2.5 3 3.5 4 4 4 4.5 5 6 6 8 8 10
For thread diameter
(M18) M20 (M22) M24 (M27) M30 (M33) M36 (M39) M42 M48 M56 M64
d max
min
s Nominal Size
max
min
dc max
b Nominal Size
max
min
H ≈5s
19 21.5 23.5 26 29.5 33 36 40 43 46 52 60 70
18.5 20.8 22.8 25 28 31.5 34.5 38 41 44 50 58 67
2 2 2.5 3.25 3.25 3.25 3.25 3.25 3.25 4.5 4.5 4.5 4.5
2.1 2.1 2.65 3.4 3.4 3.4 3.4 3.4 3.4 4.7 4.7 4.7 4.7
1.9 1.9 2.35 3.1 3.1 3.1 3.1 3.1 3.1 4.3 4.3 4.3 4.3
29.4 31.9 35.9 39.4 44 49.5 52.5 60.5 63.5 66.5 72.5 84.5 94.5
5 5 6 6.5 7 8 8 10 10 10 10 12 12
5.2 5.2 6.2 6.7 7.25 8.25 8.25 10.25 10.25 10.25 10.25 12.25 12.25
4.8 4.8 5.8 6.3 6.75 7.75 7.75 9.75 9.75 9.75 9.75 11.75 11.75
10 10 12.5 16.25 16.25 16.25 16.25 16.25 16.25 22.5 22.5 22.5 22.5
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