JIS B 1251 - 2018 Conical Spring Lock Washers - Type 1


Unit: mm
日标JIS B1251 - 2018 JIS1251 1251JIS Conical Spring Lock Washers - Type 1
Nominal Diameter
d
Φ3 Φ4 (Φ4.5) Φ5 Φ6 Φ8 Φ10 Φ12
d max
min
dc max
min
h Light max
min
Heavy max
min
H Light
Heavy
3.4 4.5 5 5.5 6.65 8.65 10.8 13.3
3.2 4.3 4.8 5.3 6.4 8.4 10.5 13
7 9 10 10 12.5 17 21 24
6.75 8.75 9.75 9.75 12.2 16.7 20.6 23.6
0.535 0.745 0.85 0.85 1.055 1.47 1.885 2.3
0.465 0.655 0.75 0.75 0.945 1.33 1.715 2.1
/ / / / 1.265 1.885 2.3 2.6
/ / / / 1.135 1.715 2.1 2.4
0.75 0.95 1.05 1.1 1.35 1.85 2.3 2.7
/ / / / 1.55 2.15 2.65 3.05
Nominal Diameter
d
(Φ14) Φ16 (Φ18) Φ20 (Φ22) Φ24 (Φ27) Φ30
d max
min
dc max
min
h Light max
min
Heavy max
min
H Light
Heavy
15.3 17.3 19.35 21.35 23.35 25.35 28.35 31.4
15 17 19 21 23 25 28 31
28 30 34 37 39 44 50 56
27.6 29.6 33.5 36.5 38.5 43.5 49.5 55.3
2.6 2.9 3.11 3.61 3.61 4.11 4.64 5.14
2.4 2.7 2.89 3.39 3.39 3.89 4.36 4.86
3.11 3.61 4.11 4.64 5.14 / / /
2.89 3.39 3.89 4.36 4.86 / / /
3.15 3.5 3.9 4.4 4.7 5.2 5.9 6.6
3.65 4.1 4.64 5.2 5.65 / / /
Alternative history
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