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Serrated lock washers


DIN 6797 A
Serrated lock washers, external teeth

DIN 6797 A are external toothed washers that can provide a discreet locking.
They are particularly effective on flat bearing surfaces that are larger than their outer diameter.

Scheda prodotto - DIN 6797 A
SIZE WASHER DIMENSIONS SUPPLEMENTARY DATA WEIGHT
screw mm
d
min
d
max
D
min
D
max
s
tol
teeth no.
Load test
Torsion torque
(Nm)
Kg/1000
3 3,20 3,38 5,70 6,00 0,40 0,020 -0,020 6 1,40 0,039
4 4,30 4,48 7,64 8,00 0,50 0,025 -0,025 8 3,30 0,080
5x10 5,30 5,48 9,64 10,00 0,60 0,025 -0,025 8 6,70 0,168
6 6,40 6,62 10,57 11,00 0,70 0,030 -0,030 8 11,20 0,221
8x15 8,40 8,62 14,57 15,00 0,80 0,030 -0,030 8 27,00 0,517
10 10,50 10,77 17,57 18,00 0,90 0,030 -0,030 9 53,00 0,800
12 13,00 13,27 19,98 20,50 1,00 0,030 -0,030 10 93,00 1,030
14 15,00 15,27 23,48 24,00 1,00 0,030 -0,030 10 145,00 1,520
16 17,00 17,27 25,48 26,00 1,20 0,035 -0,035 12 230,00 1,920
18 19,00 19,33 29,48 30,00 1,40 0,035 -0,035 12 310,00 3,034
20 21,00 21,33 32,38 33,00 1,40 0,035 -0,035 12 440,00 3,750
22 23,00 23,33 35,38 36,00 1,50 0,035 -0,035 14 600,00 4,776
24 25,00 25,33 37,38 38,00 1,50 0,035 -0,035 14 770,00 5,085
27 28,00 28,33 43,38 44,00 1,60 0,045 -0,045 14 1130,00 7,687
30 31,00 31,39 47,38 48,00 1,60 0,045 -0,045 14 1550,00 9,100
Dimensions in mm 
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Materials used

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Spring steel EN 10132 - 1/4 (DIN 17222)
Ø from 3 to 30 mm: strip C60S (C60)

Hardness

Ø from 3 to 30 mm: HV 350 ÷ 425, HRC 36 ÷ 43

Standard surface finish

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Ø from 3 to 30 mm: self-finished and oiled
Ø from 3 to 30 mm: electrolytic zinc plating

Packaging

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Additional information

Surface Finishes on request
Upon request and for quantities / prices to be established, lock washers DIN 6797 A can be supplied with the following surface finishes:
Phosphating
Mechanical Zinc Plating