DIN 128A

Spring lock washers - Type A

Curved form

tech-din128a






Nominal Diameter 2 2.5 3
d min 2.1 2.6 3.1
max 2.4 2.9 3.4
dc max 4.4 5.1 6.2
b Nominal Size 0.9 1 1.3
max 1 1.1 1.4
min 0.8 0.9 1.2
s Nominal Size 0.5 0.6 0.7
max 0.6 0.7 0.8
min 0.4 0.5 0.6
h min 0.7 0.9 1.1
max 0.9 1.1 1.3
per 1000 units ≈ kg 0.035 0.055 0.09

Nominal Diameter 3.5 4 5
d min 3.6 4.1 5.1
max 3.9 4.4 5.4
dc max 6.7 7.6 9.2
b Nominal Size 1.3 1.5 1.8
max 1.4 1.6 1.9
min 1.2 1.4 1.7
s Nominal Size 0.7 0.8 1
max 0.8 0.9 1.1
min 0.6 0.7 0.9
h min 1.1 1.2 1.5
max 1.3 1.4 1.7
per 1000 units ≈ kg 0.1 0.15 0.3

Nominal Diameter 6 7 8
d min 6.1 7.1 8.1
max 6.5 7.5 8.5
dc max 11.8 12.8 14.8
b Nominal Size 2.5 2.5 3
max 2.65 2.65 3.15
min 2.35 2.35 2.85
s Nominal Size 1.3 1.3 1.6
max 1.4 1.4 1.7
min 1.2 1.2 1.5
h min 2 2 2.45
max 2.2 2.2 2.75
per 1000 units ≈ kg 0.7 0.75 1.3

Nominal Diameter 10 12 14
d min 10.2 12.2 14.2
max 10.7 12.7 14.7
dc max 18.1 21.1 24.1
b Nominal Size 3.5 4 4.5
max 3.7 4.2 4.7
min 3.3 3.8 4.3
s Nominal Size 1.8 2.1 2.4
max 1.9 2.25 2.55
min 1.7 1.95 2.25
h min 2.85 3.35 3.9
max 3.15 3.65 4.3
per 1000 units ≈ kg 2.1 3.2 4.8

Nominal Diameter 16 18 20
d min 16.2 18.2 20.2
max 17 19 21.2
dc max 27.4 29.4 33.6
b Nominal Size 5 5 6
max 5.2 5.2 6.2
min 4.8 4.8 5.8
s Nominal Size 2.8 2.8 3.2
max 2.95 2.95 3.4
min 2.65 2.65 3
h min 4.5 4.5 5.1
max 5.1 5.1 5.9
per 1000 units ≈ kg 7 7.8 12.2

Nominal Diameter 22 24 27
d min 22.5 24.5 27.5
max 23.5 25.5 28.5
dc max 35.9 40 43
b Nominal Size 6 7 7
max 6.2 7.25 7.25
min 5.8 6.75 6.75
s Nominal Size 3.2 4 4
max 3.4 4.2 4.2
min 3 3.8 3.8
h min 5.1 6.5 6.5
max 5.9 7.5 7.5
per 1000 units ≈ kg 13.3 21.5 23.7

Nominal Diameter 30 36
d min 30.5 36.5
max 31.7 37.7
dc max 48.2 58.2
b Nominal Size 8 10
max 8.25 10.25
min 7.75 9.75
s Nominal Size 6 6
max 6.2 6.2
min 5.8 5.8
h min 9.5 10.3
max 10.5 11.3
per 1000 units ≈ kg 42.5 68



All information is strictly informative