DIN 6797A

Toothed Lock Washer - Type A

External teeth

tech-din6797a






Size 1.7 2.2 2.7
d min=nominal size 1.7 2.2 2.7
max 1.84 2.34 2.84
dc max=nominal size 3.6 4.5 5.5
min 3.3 4.2 5.2
t 0.3 0.3 0.4
Number of Teeth 6 6 6
per 1000 units≈kg 0.01 0.025 0.04
For Nominal Thread Diameter M1.6 M2 M2.5

Size 3.2 3.7 4.3
d min=nominal size 3.2 3.7 4.3
max 3.38 3.88 4.48
dc max=nominal size 6 7 8
min 5.7 6.64 7.64
t 0.4 0.5 0.5
Number of Teeth 6 6 8
per 1000 units≈kg 0.045 0.075 0.095
For Nominal Thread Diameter M3 M3.5 M4

Size 5.3 6.4 7.4
d min=nominal size 5.3 6.4 7.4
max 5.48 6.62 7.62
dc max=nominal size 10 11 12.5
min 9.64 10.57 12.07
t 0.6 0.7 0.8
Number of Teeth 8 8 8
per 1000 units≈kg 0.18 0.22 0.3
For Nominal Thread Diameter M5 M6 M7

Size 8.4 10.5 13
d min=nominal size 8.4 10.5 13
max 8.62 10.77 13.27
dc max=nominal size 15 18 20.5
min 14.57 17.57 19.98
t 0.8 0.9 1
Number of Teeth 8 9 10
per 1000 units≈kg 0.45 0.8 1
For Nominal Thread Diameter M8 M10 M12

Size 15 17 19
d min=nominal size 15 17 19
max 15.27 17.27 19.33
dc max=nominal size 24 26 30
min 23.48 25.48 29.48
t 1 1.2 1.4
Number of Teeth 10 12 12
per 1000 units≈kg 1.6 2 3.5
For Nominal Thread Diameter M14 M16 M18

Size 21 23 25
d min=nominal size 21 23 25
max 21.33 23.33 25.33
dc max=nominal size 33 36 38
min 32.38 35.38 37.38
t 1.4 1.5 1.5
Number of Teeth 12 14 14
per 1000 units≈kg 3.8 5 6
For Nominal Thread Diameter M20 M22 M24

Size 28 31
d min=nominal size 28 31
max 28.33 31.39
dc max=nominal size 44 48
min 43.38 47.38
t 1.6 1.6
Number of Teeth 14 14
per 1000 units≈kg 8 9
For Nominal Thread Diameter M27 M30



*acc. to DIN 6797: 1971


All information is strictly informative