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Spring and knurled washers


DIN 137 B
Spring washers, waved

Spring washers DIN 137 B are recommended for locking lightweight components onto soft materials, in applications that require higher torque.

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Scheda prodotto - DIN 137 B
SIZE WASHER DIMENSIONS WEIGHT
screw
mm
d1
H14
tol
d2
js16

tol

h
min
h
max
s
tol
Kg/1000
3 3,20 0,300 0 8,00 0,450 -0,450 0,80 1,60 0,50 0,050 -0,050 0,150
3,5 3,70 0,300 0 8,00 0,450 -0,450 0,90 1,80 0,50 0,050 -0,050 0,140
4 4,30 0,300 0 9,00 0,450 -0,450 1,00 2,00 0,50 0,050 -0,050 0,182
5 5,30 0,300 0 11,00 0,550 -0,550 1,10 2,20 0,50 0,050 -0,050 0,270
6 6,40 0,360 0 12,00 0,550 -0,550 1,30 2,60 0,50 0,050 -0,050 0,270
7 7,40 0,360 0 14,00 0,550 -0,550 1,50 3,00 0,80 0,060 -0,060 0,651
8 8,40 0,360 0 15,00 0,550 -0,550 1,50 3,00 0,80 0,060 -0,060 0,670
8 8,40 0,360 0 17,00 0,550 -0,550 1,70 3,40 0,80 0,060 -0,060 1,052
10 10,50 0,430 0 18,00 0,550 -0,550 2,10 4,20 1,00 0,070 -0,070 1,214
10 10,50 0,430 0 21,00 0,650 -0,650 2,10 4,20 1,00 0,070 -0,070 1,888
12 13,00 0,430 0 24,00 0,650 -0,650 2,50 5,00 1,20 0,070 -0,070 2,830
14 15,00 0,430 0 28,00 0,650 -0,650 3,00 6,00 1,60 0,080 -0,080 5,080
16 17,00 0,430 0 30,00 0,650 -0,650 3,20 6,40 1,60 0,080 -0,080 5,477
18 19,00 0,520 0 34,00 0,800 -0,800 3,30 6,60 1,60 0,080 -0,080 7,000
20 21,00 0,520 0 36,00 0,800 -0,800 3,70 7,40 1,60 0,080 -0,080 7,646
22 23,00 0,520 0 40,00 0,800 -0,800 3,90 7,80 1,80 0,100 -0,100 10,597
24 25,00 0,520 0 44,00 0,800 -0,800 4,10 8,20 1,80 0,100 -0,100 13,286
27 28,00 0,520 0 50,00 0,800 -0,800 4,70 9,40 2,00 0,100 -0,100 20,407
30 31,00 0,620 0 56,00 0,950 -0,950 5,00 10,00 2,20 0,100 -0,100 28,470
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 6 mm: HV 495 ÷ 542, HRC 48 ÷ 51
Ø from 7 to 12 mm: HV 480 ÷ 526, HRC 47 ÷ 50
Ø from 14 to 30 mm: HV 466 ÷ 510, HRC 46 ÷ 49

Standard surface finish

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

Packaging

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Additional information

Packaging on request
Upon request and for quantities / prices to be established, spring washers DIN 137 B can be supplied in bulk packaging.