INDUSTRY COMPONENT

Washer/Spacer

Washer/Spacer is a thin plate component used in fastener systems to distribute load, prevent loosening, and maintain precise spacing between machine parts.

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Component Specifications

Definition
A washer/spacer is a mechanical component typically placed under a nut, bolt head, or between two surfaces in a fastener assembly. It serves multiple functions including load distribution to prevent surface damage, vibration damping to maintain bolt tension, corrosion prevention through isolation, and precise spacing to ensure proper alignment and clearance in mechanical systems. In industrial applications, washers/spacers are critical for maintaining structural integrity, reducing wear, and ensuring reliable operation of machinery.
Working Principle
Washers/spacers work by creating a larger bearing surface area to distribute compressive forces from fasteners, reducing stress concentration on connected materials. They absorb vibrations and thermal expansions to prevent fastener loosening, maintain consistent clamping force, and provide precise dimensional spacing to ensure proper alignment and functionality of assembled components.
Materials
Common materials include carbon steel (AISI 1010-1020), stainless steel (AISI 304, 316), aluminum alloys (6061-T6), brass, bronze, plastic (nylon, PTFE), and rubber. Material selection depends on application requirements including corrosion resistance, electrical insulation, temperature tolerance, and load capacity.
Technical Parameters
  • Hardness HRB 70-100 (steel)
  • Thickness 0.5-10 mm
  • Load Capacity Varies by material and design
  • Inner Diameter 2.5-50 mm
  • Outer Diameter 5-100 mm
  • Surface Finish Plain, zinc-plated, galvanized, passivated
Standards
ISO 7089, ISO 7090, ISO 7091, DIN 125, DIN 126, DIN 127, ANSI B18.22.1

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Washer/Spacer.

washer spacer fastener component load distribution vibration damping industrial hardware machine parts ISO standards DIN standards Washer/Spacer Washer/Spacer in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Fastener System

A mechanical assembly designed to securely join and fasten panels together within a larger panel joint system.

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Engineering Analysis

Risks & Mitigation
  • Incorrect material selection leading to corrosion
  • Improper sizing causing fastener failure
  • Inadequate load distribution damaging surfaces
  • Vibration-induced loosening
  • Thermal expansion mismatch
FMEA Triads
Trigger: Material fatigue under cyclic loading
Failure: Cracking or deformation
Mitigation: Use materials with appropriate fatigue strength, implement regular inspection protocols
Trigger: Corrosion in harsh environments
Failure: Reduced thickness and load capacity
Mitigation: Select corrosion-resistant materials, apply protective coatings, use isolation washers
Trigger: Incorrect installation torque
Failure: Improper clamping force distribution
Mitigation: Follow torque specifications, use calibrated tools, implement quality control checks

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.1 mm on critical dimensions per ISO 2768-m
Test Method
Dimensional verification per ISO 9001, load testing per ASTM F436, corrosion resistance per ASTM B117

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 a washer and a spacer?

Washers primarily distribute load and prevent surface damage, while spacers are specifically designed to maintain precise distances between components. Some products combine both functions.

How do I select the right washer/spacer material?

Consider application environment (corrosion, temperature), load requirements, electrical properties, and compatibility with connected materials. Consult engineering specifications and material data sheets.

What are the consequences of using incorrect washers/spacers?

Incorrect selection can lead to fastener loosening, material deformation, corrosion, electrical issues, premature failure, and compromised machine safety and performance.

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.

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Warning Labels Water Injection Nozzles