DIN 7980

High Collar Lock Washer

With square ends, for cheese head screws

tech-din7980






Nominal Diameter Φ3 Φ3.5 Φ4
d min 3.1 3.6 4.1
max 3.4 3.9 4.4
h Nominal Size 1 1 1.2
max 1.1 1.1 1.3
min 0.9 0.9 1.1
n Nominal Size 1 1 1.2
max 1.1 1.1 1.3
min 0.9 0.9 1.1
H min 2 2 2.4
max 2.36 2.36 2.83
For Nominal Thread Diameter M3 M3.5 M4
per 1000 units ≈ kg 0.105 0.114 0.195

Nominal Diameter Φ5 Φ6 Φ8
d min 5.1 6.1 8.1
max 5.4 6.5 8.5
h Nominal Size 1.6 1.6 2
max 1.7 1.7 2.1
min 1.5 1.5 1.9
n Nominal Size 1.6 1.6 2
max 1.7 1.7 2.1
min 1.5 1.5 1.9
H min 3.2 3.2 4
max 3.78 3.78 4.72
For Nominal Thread Diameter M5 M6 M8
per 1000 units ≈ kg 0.37 0.425 1.06

Nominal Diameter Φ10 Φ12 Φ14
d min 10.2 12.2 14.2
max 10.7 12.7 14.7
h Nominal Size 2.5 2.5 3
max 2.65 2.65 3.2
min 2.35 2.35 2.8
n Nominal Size 2.5 2.5 3
max 2.65 2.65 3.2
min 2.35 2.35 2.8
H min 5 5 6
max 5.9 5.9 7.1
For Nominal Thread Diameter M10 M12 M14
per 1000 units ≈ kg 1.96 2.28 3.8

Nominal Diameter Φ16 Φ18 Φ20
d min 16.2 18.2 20.2
max 17 19 21.2
h Nominal Size 3.5 3.5 4.5
max 3.7 3.7 4.7
min 3.3 3.3 4.3
n Nominal Size 3.5 3.5 4.5
max 3.7 3.7 4.7
min 3.3 3.3 4.3
H min 7 7 9
max 8.25 8.25 10.6
For Nominal Thread Diameter M16 M18 M20
per 1000 units ≈ kg 5.94 6.6 12.3

Nominal Diameter Φ22 Φ24 Φ27
d min 22.5 24.5 27.5
max 23.5 25.5 28.5
h Nominal Size 4.5 5 5
max 4.7 5.2 5.2
min 4.3 4.8 4.8
n Nominal Size 4.5 5 5
max 4.7 5.2 5.2
min 4.3 4.8 4.8
H min 9 10 10
max 10.6 11.8 11.8
For Nominal Thread Diameter M22 M24 M27
per 1000 units ≈ kg 13.6 18.1 20.6

Nominal Diameter Φ30 Φ33 Φ36
d min 30.5 33.5 36.5
max 31.7 34.7 37.7
h Nominal Size 6 6 7
max 6.2 6.2 7.25
min 5.8 5.8 6.75
n Nominal Size 6 6 7
max 6.2 6.2 7.25
min 5.8 5.8 6.75
H min 12 12 14
max 14.2 14.2 16.5
For Nominal Thread Diameter M30 M33 M36
per 1000 units ≈ kg 32 35 52.5

Nominal Diameter Φ42 Φ48
d min 42.5 49
max 43.7 50.5
h Nominal Size 8 8
max 8.25 8.25
min 7.75 7.75
n Nominal Size 8 8
max 8.25 8.25
min 7.75 7.75
H min 16 16
max 18.9 18.9
For Nominal Thread Diameter M42 M48
per 1000 units ≈ kg 80 90



All information is strictly informative