Wholesale DIN 7980:1987 Socket Head Cap Spring Washer

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DIN 7980:1987 Socket Head Cap Spring Washer

DIN 7980:1987 Spring Washer for socket head cap screws is used with cylindrical-head screws and similar fasteners. The split spring structure provides a degree of elastic reaction after tightening, helping improve loosening resistance in ordinary joints.

It is commonly applied in machinery, instrument assembly, electrical cabinets, maintenance joints, and small-to-medium screw assemblies. Its outside diameter and thickness are suited to the space beneath socket head cap screws and can function within limited counterbores or bearing seats.

Material and surface finish can be selected according to screw size, vibration level, and environmental conditions to improve rust resistance, elastic retention, and maintenance reliability of the connection.

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Dimensions unit: mm

Nominal diameter Φ3 Φ3.5 Φ4 Φ5 Φ6 Φ8 Φ10 Φ12 Φ14 Φ16
d Min. 3.1 3.6 4.1 5.1 6.1 8.1 10.2 12.2 14.2 16.2
Max. 3.4 3.9 4.4 5.4 6.5 8.5 10.7 12.7 14.7 17
h Nominal 1 1 1.2 1.6 1.6 2 2.5 2.5 3 3.5
Max. 1.1 1.1 1.3 1.7 1.7 2.1 2.65 2.65 3.2 3.7
Min. 0.9 0.9 1.1 1.5 1.5 1.9 2.35 2.35 2.8 3.3
n Nominal 1 1 1.2 1.6 1.6 2 2.5 2.5 3 3.5
Max. 1.1 1.1 1.3 1.7 1.7 2.1 2.65 2.65 3.2 3.7
Min. 0.9 0.9 1.1 1.5 1.5 1.9 2.35 2.35 2.8 3.3
H Min. 2 2 2.4 3.2 3.2 4 5 5 6 7
Max. 2.36 2.36 2.83 3.78 3.78 4.72 5.9 5.9 7.1 8.25
Applicable thread M3 M3.5 M4 M5 M6 M8 M10 M12 M14 M16
Weight per thousand pieces (steel)≈kg  0.105 0.114 0.195 0.37 0.425 1.06 1.96 2.28 3.8 5.94

   

Nominal diameter Φ18 Φ20 Φ22 Φ24 Φ27 Φ30 Φ33 Φ36 Φ42 Φ48
d Min. 18.2 20.2 22.5 24.5 27.5 30.5 33.5 36.5 42.5 49
Max. 19 21.2 23.5 25.5 28.5 31.7 34.7 37.7 43.7 50.5
h Nominal 3.5 4.5 4.5 5 5 6 6 7 8 8
Max. 3.7 4.7 4.7 5.2 5.2 6.2 6.2 7.25 8.25 8.25
Min. 3.3 4.3 4.3 4.8 4.8 5.8 5.8 6.75 7.75 7.75
n Nominal 3.5 4.5 4.5 5 5 6 6 7 8 8
Max. 3.7 4.7 4.7 5.2 5.2 6.2 6.2 7.25 8.25 8.25
Min. 3.3 4.3 4.3 4.8 4.8 5.8 5.8 6.75 7.75 7.75
H Min. 7 9 9 10 10 12 12 14 16 16
Max. 8.25 10.6 10.6 11.8 11.8 14.2 14.2 16.5 18.9 18.9
Applicable thread M18 M20 M22 M24 M27 M30 M33 M36 M42 M48
Weight per thousand pieces (steel)≈kg  6.6 12.3 13.6 18.1 20.6 32 35 52.5 80 90

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 7980:1987 Socket Head Cap Spring Washer 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 7980:1987 Socket Head Cap Spring Washer 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 7980:1987 Socket Head Cap Spring Washer 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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