Wholesale DIN 7343:1969 Coiled Spring Dowel Pin

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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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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 

-

-

-

-

-

-

-

-

FAQ

Frequently Asked Questions

  • 1. How soon can I expect a reply after sending an inquiry?

    A: We take every inquiry seriously. On working days, we will respond within 12 hours after receiving your inquiry.

  • 2. What products do you mainly offer?

    A: We focus on the production of fasteners made of carbon steel, stainless steel, and low-alloy steel. We are a direct manufacturer with independent production capacity. DIN 7343:1969 Coiled Spring Dowel Pin Factory. We own several fastener manufacturing facilities and have an international sales department, providing full-process services from production to export.

  • 3. Do you support customized production?

    A: Customized production is our core business. We can develop and manufacture products based on the drawings or samples you provide.

  • 4. Do you produce standard parts?

    A: Yes. In addition to custom products, we also produce general construction machinery parts (GET parts) for equipment such as excavators, including bucket teeth, tooth holders, corner blades, pins, clips, bolts and nuts. DIN 7343:1969 Coiled Spring Dowel Pin Wholesale.

  • 5. What is your production capacity?

    A: We have 12 energy-efficient and environmentally friendly modern production lines (including one fully automatic shell molding line and four heat treatment lines), with an annual production capacity exceeding 20,000 tons, enabling us to steadily meet various order requirements.

  • 6. What are your payment terms?

    A: Trade terms (such as FOB, CIF, etc.) are confirmed when quoting. For batch production, we typically require a 30% deposit, with the balance paid against the copy of the bill of lading. T/T is the main payment method accepted, and L/C can also be negotiated.

  • 7. How is the shipment arranged?

    A: We are only 35 km away from Shanghai Port and Ningbo Port, so sea freight is the main mode of transportation, which is convenient and efficient. For urgent deliveries, we can also arrange air freight via Ningbo or Shanghai airports.

Better Fastener Industry Co., Ltd.

About Us

BETTER FASTENER INDUSTRY CO., LTD.

Better Fastener is a professional fastener enterprise specializing in the manufacturing of steel washers, stainless steel washers, spring washers and sealingwashers. Founded in 2001 as a washer factory, the company expanded into a comprehensive enterprise integrating washers, nuts, bolts, spring nuts and other fastener products in 2010. DIN 7343:1969 Coiled Spring Dowel Pin Suppliers in China.

The company positions itself as a provider of comprehensive one-stop services for customers, relying on technological R&D, industrial investment and trade distribution.

With an experienced professional team and a sound sales network, Better Fastener has achieved excellent sales performance in both domestic and foreign markets,and has grown into one of the competitive manufacturers and suppliers in China's industrial fastener industry.

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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