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Lock Washers Component – Machinery and Equipment Manufacturing

Component Specifications

Definition

Lock washers are specialized fastening components used in aluminum profile corner connectors to maintain preload and prevent loosening of bolts or screws due to vibration, thermal cycling, or dynamic loads. They function by applying a continuous spring force against the fastener head/nut and the joint surface, compensating for material relaxation and maintaining clamping force.

Working Principle

Lock washers work on the spring principle - when compressed during fastener tightening, they store elastic energy that creates a continuous axial force. This force maintains tension in the bolt/screw, preventing rotation and loosening. The split or helical design allows the washer to act as a spring, applying constant pressure even as materials settle or expand/contract.

Materials

Typically made from spring steel (AISI 1074/1095), stainless steel (AISI 302/304/316), or phosphor bronze. Surface treatments include zinc plating, galvanization, or dichromate coating for corrosion resistance. Material hardness: HRC 40-50 for steel versions.

Technical Parameters

Thickness 1-3 mm
Load Capacity 200-1000 N
Inner Diameter 4-12 mm
Outer Diameter 8-20 mm
Surface Finish Zinc plated or passivated
Temperature Range -40°C to +120°C

Standards

ISO 10683, DIN 127, ISO 898-1

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Lock Washers.

Parent Products

This component is used in the following industrial products

Aluminum Profile Corner Connector

Structural connector for joining aluminum extrusion profiles at right angles

View Product Details

Engineering Analysis

Risks & Mitigation

Over-torquing can flatten the spring action
Galvanic corrosion with aluminum profiles
Incorrect washer size leading to insufficient locking force
Material fatigue after repeated loading cycles

FMEA Triads

Trigger: Insufficient preload during installation
Failure: Fastener loosening under vibration
Mitigation: Use torque wrenches with calibrated settings, follow manufacturer torque specifications, implement regular inspection schedules

Trigger: Galvanic corrosion between steel washer and aluminum profile
Failure: Corrosion-induced seizure or reduced locking force
Mitigation: Use compatible materials (stainless steel or coated washers), apply anti-seize compounds, implement corrosion protection measures

Trigger: Material fatigue from cyclic loading
Failure: Loss of spring tension over time
Mitigation: Regular replacement schedules, use higher-grade materials for high-cycle applications, implement preventive maintenance programs

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

±0.1 mm on diameter dimensions, ±0.05 mm on thickness

Test Method

Vibration testing per ISO 16148, torque retention testing, salt spray testing per ISO 9227 for corrosion resistance

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation

4/5

Manufacturing capability

4/5

Inspection readiness

5/5

Supplier transparency

3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the difference between lock washers and flat washers?

Flat washers distribute load and prevent surface damage, while lock washers actively prevent fastener loosening through spring action. Lock washers are specifically designed for vibration-prone applications.

How do I properly install lock washers in aluminum profile connectors?

Install between the fastener head/nut and the joint surface. Ensure the washer is not over-compressed (should maintain spring action) and use proper torque specifications. Always follow manufacturer recommendations for specific aluminum alloy applications.

Can lock washers be reused?

Generally not recommended. Lock washers lose their spring properties after compression and may not provide adequate locking force upon reinstallation. Always use new washers for critical connections.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

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.

Lock Washers