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Serrated lock washers


RDD
Double toothed washers

Double toothed washers RDD are particularly effective on flat bearing surfaces, when the diameter of the bore is significantly larger than the diameter of the screw.

Scheda prodotto - RDD
SIZE WASHER DIMENSIONS SUPPLEMENTARY DATA WEIGHT
screw mm
d
H14
tol
D
h16

tol

s
tol
external
teeth no.
internal
teeth no.
Load test
Torsion torque
(Nm)
Kg/1000
3 3,20 0,300 0 12,00 0 -1,100 0,50 0,025 -0,025 7 12 1,40 0,376
4 4,30 0,300 0 15,00 0 -1,100 0,70 0,030 -0,030 7 14 3,30 0,872
4 4,30 0,300 0 18,00 0 -1,100 0,80 0,030 -0,030 8 16 3,30 1,451
5 5,30 0,300 0 15,00 0 -1,100 0,80 0,030 -0,030 7 14 6,70 0,906
5 5,30 0,300 0 18,00 0 -1,100 0,80 0,030 -0,030 8 16 6,70 1,385
5 5,50 0,300 0 20,00 0 -1,300 1,00 0,030 -0,030 8 16 6,70 2,160
6 6,50 0,360 0 18,00 0 -1,100 0,80 0,030 -0,030 8 16 11,20 1,306
6 6,50 0,360 0 20,00 0 -1,300 1,00 0,030 -0,030 8 16 11,20 2,040
6 6,50 0,360 0 22,00 0 -1,300 1,00 0,030 -0,030 8 16 11,20 2,570
8 8,50 0,360 0 22,00 0 -1,300 1,00 0,030 -0,030 9 16 27,00 2,452
8 8,50 0,360 0 26,00 0 -1,300 1,00 0,030 -0,030 9 18 27,00 3,432
10 10,50 0,430 0 26,00 0 -1,300 1,00 0,030 -0,030 11 18 53,00 3,265
10 10,50 0,430 0 30,00 0 -1,300 1,20 0,035 -0,035 11 18 53,00 5,520
12 12,50 0,430 0 30,00 0 -1,300 1,20 0,035 -0,035 11 18 93,00 5,266
12 12,50 0,430 0 32,00 0 -1,600 1,20 0,035 -0,035 12 20 93,00 6,211
13-1/2" 13,20 0,430 0 32,00 0 -1,600 1,20 0,035 -0,035 12 20   6,020
14 14,50 0,430 0 32,00 0 -1,600 1,40 0,035 -0,035 12 20 145,00 6,550
14 14,50 0,430 0 35,00 0 -1,600 1,40 0,035 -0,035 12 20 145,00 8,387
16 16,50 0,430 0 35,00 0 -1,600 1,40 0,035 -0,035 13 20 230,00 7,400
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 16 mm: strip C60S (C60)

Hardness

Ø from 3 to 16 mm: HV 350 ÷ 425, HRC 36 ÷ 43

Standard surface finish

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Ø from 3 to 16 mm: self-finished and oiled

Packaging

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Additional information

Surface Finishes on request
Upon request and for quantities / prices to be established, double toothed washers RDD can be supplied with the following surface finishes:
Electrolytic Zinc Plating