INDUSTRY COMPONENT

Spring Washer

Spring washer is a mechanical fastener designed to prevent loosening of bolted joints through spring tension and friction.

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Component Specifications

Definition
A spring washer, specifically a disc spring or Belleville washer, is a conical-shaped washer that applies a continuous spring force against a nut or bolt head. When compressed during tightening, it creates axial tension that counteracts vibrational loosening in mechanical assemblies. In coupling mechanisms, it maintains preload on connecting elements, ensuring torque transmission reliability.
Working Principle
Works on the spring principle: when compressed between mating surfaces during bolt tightening, the washer's conical shape deflects elastically, storing mechanical energy as spring force. This force maintains constant pressure on the threaded connection, increasing friction at the thread interface and preventing rotation-induced loosening under dynamic loads.
Materials
Typically made from spring steel (SAE 1070-1095, AISI 1050-1095), stainless steel (AISI 302/304/316), or alloy steel. May feature zinc plating, phosphate coating, or dichromate treatment for corrosion resistance. Material hardness: HRC 40-50 for standard applications.
Technical Parameters
  • Thickness 1-5 mm
  • Load Capacity 200-5000 N
  • Inner Diameter 4-25 mm
  • Outer Diameter 8-50 mm
  • Operating Temperature -40°C to +120°C
Standards
ISO 10683, DIN 6796, ASME B18.21.1

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Spring Washer.

spring washer Belleville washer anti-vibration washer locking washer mechanical fastener coupling component bolt retention Spring Washer in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Coupling Mechanism

A mechanical interface within a high-frequency RF connector that ensures secure, repeatable, and low-loss electrical connection between mating components.

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Engineering Analysis

Risks & Mitigation
  • Fatigue failure from cyclic loading
  • Corrosion in harsh environments
  • Incorrect installation reducing effectiveness
  • Material embrittlement at extreme temperatures
FMEA Triads
Trigger: Over-tightening beyond elastic limit
Failure: Plastic deformation, loss of spring force
Mitigation: Use torque wrenches with specified values; replace if flattened
Trigger: Exposure to corrosive chemicals
Failure: Material degradation, fracture
Mitigation: Select corrosion-resistant materials; apply protective coatings

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.1 mm on dimensions per ISO 2768-m
Test Method
Compression testing per ISO 10683; salt spray testing per ASTM B117 for corrosion resistance

Buyer Feedback

★★★★☆ 4.8 / 5.0 (10 reviews)

"Impressive build quality. Especially the technical reliability is very stable during long-term operation."

"As a professional in the Machinery and Equipment Manufacturing sector, I confirm this Spring Washer meets all ISO standards."

"Standard OEM quality for Machinery and Equipment Manufacturing applications. The Spring Washer arrived with full certification."

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Frequently Asked Questions

How does a spring washer prevent loosening?

It creates continuous spring pressure that increases friction between threads, resisting rotational forces from vibration or thermal cycling.

Can spring washers be reused?

Not recommended, as repeated compression cycles can cause spring fatigue and loss of tension, compromising locking effectiveness.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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