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Unit:mm

Spring Lock Washers with Safety Ring

DIN 6913 - 1987

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德标DIN 6913 - 1987 DIN6913 6913DIN Spring Lock Washers with Safety Ring
Calculate weight and price. Weight 1000 pcs : kg x $ per kg = $ 1000 pcs
Default density g/cm3
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Choose materials based on density.(g/cm3)

  • Carbon Steel 7.85
  • Stainless Steel 8.1
  • Stainless Steel 7.95
  • Stainless Steel 7.7
  • Titanium Alloy 4.5
  • Aluminum Alloy 2.8
  • Copper 8.89


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Size
Φ3 ① Φ4 Φ5 Φ6 Φ8 Φ10 Φ12 Φ14 Φ16 Φ18
d min
dc
d3 max
min
s
h1 max
min
h2 max
min
per 1000 units ≈ kg
3.1 4.1 5.1 6.1 8.2 10.2 12.2 14.2 16.2 18.2
5.4 6.7 8.25 9.5 12.5 15 17.5 21 24 27
7 9 11 12 16 19 22 27 30 34
6.7 8.7 10.6 11.6 15.6 18.5 21.5 26.5 29.5 33.5
1.25 1.75 2 2.25 2.75 3 3.5 4.5 5 5.5
3 4.2 4.8 5.4 6.6 7.2 8.4 10.8 12 13.2
2 2.8 3.2 3.6 4.4 4.8 5.6 7.2 8 8.8
3 3.9 4.5 5 6 6.6 7.6 10 11.2 12.4
2 2.5 2.9 3.2 3.8 4.2 4.8 6.4 7 8
0.3 0.68 1.18 1.49 3.18 4.7 7.28 14.5 19.8 27.6
Size
Φ20 Φ22 Φ24 Φ27 Φ30 Φ33 Φ36 Φ39 ② Φ42 ②
d min
dc
d3 max
min
s
h1 max
min
h2 max
min
per 1000 units ≈ kg
20.2 22.5 24.5 27.5 30.5 33.5 36.5 39.5 42.5
30 34 34 39 42 48 52 56 60
38 42 42 48 52 58 62 70 75
37.2 41.2 41.2 47.2 51 57 61 69 74
6.1 6.6 7.1 7.1 7.1 8.1 9.1 10.1 11.1
14.6 15.8 17 17 17 19.4 21.8 24.2 26.6
9.8 10.6 11.4 11.4 11.4 13 14.6 16.2 17.8
13.8 15 16 16 15.4 17.8 20.2 23 25
9 9.8 10.4 10.4 9.8 11.4 13 14.6 16.2
38.3 46.6 46.1 67.4 76.3 105 141 208 269
①,Test values for the spring force test as described in DIN 267 Part 26 have not as ye been specified for this nominal size.
②,Test values for the test for permanent set as described in DIN 267 Part 26 have not as yet been specified for this nominal size.
③,Technical delivery conditions
DIN 267 Part 26 shall apply with regard to the technical delivary conditions for spring lock washers made of spring steel. The technical delivery conditions for spring lock washers made of copper-zinc alloys shall be the subject of agreement.
Material:
FSt = spring steel as specified in DIN 267 Part 26, or CuSn 8 as specified in DIN 17662 (only up to nominal size 22).
safety ring: St = steel.
CuZn = copper-zinc alloy.
④,Explanatory notes
By mainaining a sufficiently high preioading in a bolt/nut assembly, spring washers are designed to prevent loosening of the assembly, which may be caused, for instance, by the effect of setting in the assembly. The specification of residual spring forces in DIN 267 Part 26 has made it possible for the first time to assess the performance of spring washers. Owing to the spring forces which may be achived (see DIN 267 Part 26) by using spring lock washers as covered in the present standard, such washers are only suitable for bolt/nut assemblies involving bolts of property class 5.8 or less. When spring lock washers with safety ring were developed, the heat treatment methods available at the time were not able to ensure that the washers would not fracture during service. The purpose of the safety ring was to retain the fragments of the washer should it break and thus to prevent further damage occurring, particularly in the case of electrical installations. The problem has now been resolved and it is intended to withdraw this standard after a transitional period of five years. It is crcommended that spring lock washers as specified in DIN 128 should be used instead of those specified in the present standard.
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