INDUSTRY COMPONENT

Locking Washer

A locking washer designed to maintain preload in adjustment mechanisms by preventing fastener loosening under vibration and dynamic loads.

Component Specifications

Definition
A specialized washer used in preload adjustment mechanisms to secure fasteners against rotational loosening caused by vibration, thermal cycling, and dynamic operational forces. It functions by creating frictional resistance or mechanical interference between the fastener and mating surface, ensuring consistent preload maintenance critical for precision machinery alignment and performance.
Working Principle
Works by generating axial tension and radial expansion when compressed under a fastener, creating spring-like action that maintains clamping force. Some designs feature teeth or serrations that bite into mating surfaces, providing mechanical locking through deformation or interference fit.
Materials
Typically made from spring steel (SAE 1070-1095), stainless steel (AISI 304/316), or alloy steel. May feature zinc plating, phosphate coating, or dichromate treatment for corrosion resistance.
Technical Parameters
ParameterTypical rangeNotes & selection driver
HardnessHRC 40-50
Thickness0.5-3 mm
Load Capacity50-500 N
Inner Diameter4-25 mm
Outer Diameter8-50 mm
Temperature Range-40°C to 250°C

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards
ISO 7085, DIN 6796, ANSI B18.21.1

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Over-torquing causing deformation
  • Material fatigue under cyclic loads
  • Corrosion in harsh environments
  • Incompatibility with soft mating surfaces
FMEA Triads
Trigger: Insufficient torque during installation
Failure: Inadequate preload maintenance leading to mechanism misalignment
Mitigation: Use calibrated torque wrenches and follow manufacturer specifications
Trigger: Material degradation from corrosion
Failure: Reduced locking force and potential fastener loosening
Mitigation: Select appropriate corrosion-resistant materials and coatings

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
±0.1 mm on critical dimensions per ISO 2768-m
Test Method
Vibration testing per ISO 16148, torque retention testing, salt spray testing per ASTM B117

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Locking Washer

Manufacturer profiles associated with Locking Washer.

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Frequently Asked Questions

How does a locking washer differ from a standard washer?

Locking washers incorporate design features like teeth, serrations, or spring action to prevent rotational loosening, while standard washers primarily distribute load.

Can locking washers be reused?

Generally not recommended as deformation and wear reduce effectiveness. Single-use ensures optimal locking performance.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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