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Serrated lock washers

DIN 6798 A
Serrated lock washers, external teeth

DIN 6798 A are external toothed washers that can provide excellent locking.
They are particularly effective on flat bearing surfaces that are larger than their outer diameter.

® Sizes Ø from 3 to 16 mm feature overlapped teeth to ensure an excellent clamping. Internal hole of sizes 6, 8x14, 12 and 16 features a restricted tolerance compared to the standard in order to reduce the play between washer and screw. Watch the video!

Download technical data sheet
Scheda prodotto - DIN 6798 A
SIZE WASHER DIMENSIONS SUPPLEMENTARY DATA WEIGHT
screw
mm
d
H13
tol
D
h14
tol 
s
tol
no. of
teeth
Load test
Torsion torque (Nm)
Kg/1000
2 2,20 0,140 0 4,50 0 -0,30 0,30 0,020 -0,020 9            0,38   0,025
2,3 2,50 0,140 0 5,00 0 -0,30 0,40 0,020 -0,020 9            0,61   0,042
2,5 2,70 0,140 0 5,50 0 -0,30 0,40 0,020 -0,020 9            0,81   0,052
2,6 2,80 0,140 0 5,50 0 -0,30 0,40 0,020 -0,020 9            0,81   0,048
3 3,20 0,180 0 6,00 0 -0,30 0,40 0,020 -0,020 9            1,40   0,060
3,5 3,70 0,180 0 7,00 0 -0,36 0,50 0,025 -0,025 10            2,17   0,090
4 4,30 0,180 0 8,00 0 -0,36 0,50 0,025 -0,025 11            3,30   0,130
5 5,10 0,180 0 9,00 0 -0,36 0,50 0,025 -0,025 11            6,70   0,150
5 5,30 0,180 0 10,00 0 -0,36 0,60 0,025 -0,025 11            6,70   0,250
6 6,18 0,220 0 10,90 0 -0,43 0,70 0,030 -0,030 12          11,20   0,300
7 7,40 0,220 0 12,50 0 -0,43 0,80 0,030 -0,030 14          18,00   0,473
8 8,20 0,220 0 14,00 0 -0,43 0,80 0,030 -0,030 14          27,00   0,560
8 8,40 0,220 0 15,00 0 -0,43 0,80 0,030 -0,030 14          27,00   0,720
9 - 3/8" 9,55 0,220 0 16,00 0 -0,43 0,80 0,030 -0,030 14   0,740
10 10,50 0,270 0 18,00 0 -0,43 0,90 0,030 -0,030 16          53,00   1,040
11-7/16" 11,50 0,270 0 19,50 0 -0,52 0,90 0,030 -0,030 16   1,262
12 12,60 0,270 0 20,22 0 -0,52 1,00 0,030 -0,030 16          93,00   1,420
13-1/2" 13,20 0,270 0 22,00 0 -0,52 1,00 0,030 -0,030 16   1,726
14 15,00 0,270 0 24,00 0 -0,52 1,00 0,030 -0,030 18        145,00   2,084
16 16,50 0,270 0 26,00 0 -0,52 1,20 0,035 -0,035 18        230,00   2,700
18 19,00 0,330 0 30,00 0 -0,52 1,40 0,035 -0,035 18        310,00   4,303
20 21,00 0,330 0 33,00 0 -0,62 1,40 0,035 -0,035 18        440,00   5,120
22 23,00 0,330 0 36,00 0 -0,62 1,50 0,035 -0,035 18        600,00   6,450
24 25,00 0,330 0 38,00 0 -0,62 1,50 0,035 -0,035 18        770,00   6,770
26-1" 26,40 0,330 0 40,00 0 -0,62 1,60 0,045 -0,045 18   8,120
27 28,00 0,330 0 44,00 0 -0,62 1,60 0,045 -0,045 20    1.130,00   10,400
30 31,00 0,390 0 48,00 0 -0,62 1,60 0,045 -0,045 20    1.550,00   12,449
Dimensions in mm 
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Materials used

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Spring steel EN 10132 - 1/4 (DIN 17222)
Ø from 2 to 30 mm: strip C60S (C60)

Hardness

HV 350 ÷ 425, HRC 36 ÷ 43

Standard surface finish

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- self-finished and oiled
- electrolytic zinc plating

Packaging

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loose in boxes

Additional information

Packaging on request
Upon request and for quantities / prices to be established, lock washers DIN 6798 A can be supplied in bulk packaging.

Surface Finishes on request
Upon request and for quantities / prices to be established, lock washers DIN 6798 A can be supplied with the following surface finishes:
Phosphating
Mechanical Zinc Plating