External Serrated Lock Washer DIN6798A

DEFAULT SPECIFICATIONS

Brand HJ Tech
Standard DIN6798A
Material 65Mn/50#  SS304/SS316/SS420
Finish

Zinc/Black

Size M3-M36  

 

FEATURES

DIN 6798 A External Serrated Lock Washers rely upon serrations, formed from twisted tabs around the washer's outside circumference, to resist loosening. To ensure the prongs contact the head and mating surface, use with large diameter heads like pan. Having the prongs around the perimeter provides greater twisting resistance. Spring steel with a phosphate finish and zinc plated, and stainless steel are available. Washer size indicates nominal size and should be selected to match the screw size (M6 washers are used with M6 screws for instance). They are sometimes referred to as DIN 6798 Type A.

External Serrated Lock Washer DIN6798A

Description:

 

  d dc t Number of Teeth weight For Thread
Size min max max min   min kg  
1.7 1.7 1.84 3.6 3.3 0.3 9 0.02 M1.6
2.2 2.2 2.34 4.5 4.2 0.3 9 0.03 M2
2.7 2.7 2.84 5.5 5.2 0.4 9 0.045 M2.5
3.2 3.2 3.38 6 5.7 0.4 9 0.06 M3
3.7 3.7 3.88 7 6.64 0.5 10 0.11 M3.5
4.3 4.3 4.48 8 7.64 0.5 11 0.14 M4
5.3 5.3 5.48 10 9.64 0.6 11 0.28 M5
6.4 6.4 6.62 11 10.57 0.7 12 0.36 M6
7.4 7.4 7.62 12.5 12.07 0.8 14 0.5 M7
8.4 8.4 8.62 15 14.57 0.8 14 0.8 M8
10.5 10.5 10.77 18 17.57 0.9 16 1.25 M10
13 13 13.27 20.5 19.98 1 16 1.6 M12
15 15 15.27 24 23.48 1 18 2.3 M14
17 17 17.27 26 25.48 1.2 18 2.9 M16
19 19 19.33 30 29.48 1.4 18 5 M18
21 21 21.33 33 32.38 1.4 20 6 M20
23 23 23.33 36 35.38 1.5 20 7.5 M22
25 25 25.33 38 37.38 1.5 20 8 M24
28 28 28.33 44 43.38 1.6 22 12 M27
31 31 31.39 48 47.38 1.6 22 14 M30