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DIN 7343:1969 Coiled Spring Dowel Pin

DIN 7343:1969 Coiled Spring Dowel Pin is characterized by a standard coiled spring dowel pin design and is intended for locating connections requiring elastic interference, vibration damping, and impact tolerance.

The coiled structure creates radial spring force after insertion, compensates for small hole-size variation, and maintains dependable location under vibration. In assembly, the design helps reduce supporting operations, improve positioning consistency, and maintain good interchangeability in repeated production or field service.

Typical applications include gearboxes, hinges, mechanical stops, fixtures, light bushings, and repair replacement. The product can be configured with spring material, coil configuration, corrosion protection, and dimensional tolerance to suit indoor, outdoor, light-load, vibration-exposed, or export supply conditions.

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PREV：ASME/ANSI B18.8.1:2000 Clevis Pin NEXT：DIN 1469:2011 Grooved Pin

Dimensions unit: inch 

Nominal diameter d

Φ0.8

Φ1

Φ1.2

Φ1.5

Φ2

Φ2.5

Φ3

Φ3.5

α

≈

0.2

0.3

0.4

0.5

0.7

0.8

1

1.2

s

0.07

0.08

0.1

0.13

0.17

0.21

0.25

0.29

d

Min.=Nominal

0.85

1.1

1.3

1.62

2.15

2.65

3.15

3.67

Max.

0.9

1.15

1.4

1.72

2.25

2.8

3.3

3.84

d2

Max.=Nominal

0.75

0.95

1.15

1.4

1.9

2.35

2.85

3.35

Min.

0.7

0.85

1.05

1.3

1.75

2.2

2.7

3.15

 Minimum shear load, single plane shear ,kN

0.2058

0.294

0.441

0.7154

1.2642

1.9012

2.7048

3.6946

 Minimum shear load, double-sided shear ,kN

0.4116

0.588

0.882

1.4308

2.5284

3.8024

5.4096

7.3892

Thousand pieces of steel weigh ≈kg 

-

-

-

-

-

-

-

-

  

Nominal diameter d

Φ4

Φ5

Φ6

Φ8

Φ10

Φ12

Φ14

Φ16

α

≈

1.3

1.7

2

3

3

4

4.5

5

s

0.33

0.42

0.5

0.67

0.84

1

1.2

1.3

d

Min.=Nominal

4.2

5.25

6.25

8.35

10.45

12.5

14.55

16.55

Max.

4.4

5.5

6.5

8.6

10.8

12.85

14.95

17

d2

Max.=Nominal

3.8

4.8

5.8

7.75

9.6

11.5

13.5

15.4

Min.

3.6

4.5

5.4

7.25

9

10.8

12.6

14.4

 Minimum shear load, single plane shear ,kN

4.8314

7.4872

10.829

19.208

30.4976

43.953

60.3876

74.529

Minimum shear load, double-sided shear ,kN

9.6628

14.9744

21.658

38.416

60.9952

87.906

120.7752

149.058

Thousand pieces of steel weigh ≈kg 

-

-

-

-

-

-

-

-

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Better Fastener is committed to becoming a trusted fastener supplier for customers with reliable product quality, reasonable prices and on-time delivery

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