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Plain Washers
Plain Washers
Plain Washers
Plain Washers
Plain Washers
Plain Washers
Plain Washers
Plain Washers
Plain Washers
Plain Washers
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Plain Washer / Flat Washer – A thin, flat circular disc with a center hole, designed to distribute the load of a threaded fastener (bolt/nut), protect mating surfaces from damage, and prevent loosening under vibration. Manufactured from carbon steel, stainless steel (A2/A4), and alloy steel. Available in metric (M2–M100) and imperial (inch) sizes. Compliant with DIN 125, ISO 7089/7090, ASME B18.22.1, and ASTM F436. Surface finishes include plain, zinc plated, hot-dip galvanized, black oxide, and Dacromet. Ideal for general machinery, automotive assembly, construction, and heavy equipment industries.

Plain Washer (Flat Washer) – Precision Engineered for Reliable Fastening Solutions

Malaxy plain washers are precision-engineered to enhance the performance and reliability of bolted connections across a wide range of industrial applications. As a critical component in any fastening system, our washers ensure even load distribution, protect mating surfaces, and maintain joint integrity under dynamic and static loads.

Technical Specifications

  • Size Range: Metric M2 to M100, Imperial #4 to 4 inches (custom sizes available)

  • Thickness Range: 0.3 mm to 12 mm standard

  • Tolerance: Conforming to ISO 4759 / DIN / ASTM standards

Material Options

  • Carbon Steel: Grades 4.6, 5.6, 8.8, 10.9 – cost-effective for general-purpose applications

  • Stainless Steel: A2-70 (304), A4-70 (316) – superior corrosion resistance for marine and outdoor environments

  • Alloy Steel: Heat-treated for high-strength structural applications

Surface Finishes (Anti-Corrosion)

  • Zinc Plated (CR+3) – standard indoor corrosion protection

  • Hot-Dip Galvanized – heavy-duty outdoor protection

  • Black Oxide – mild corrosion resistance with matte finish

  • Dacromet / Geomet – high-performance anti-corrosion for extreme environments

  • Plain (Self-Colored / Oiled) – for dry assemblies or post-installation coating

Key Standards & Certifications

  • ISO 7089 / 7090 (Metric plain washers – normal series / chamfered)

  • DIN 125 (German standard general-purpose flat washer)

  • ASME/ANSI B18.22.1 (USS / SAE flat washers)

  • ASTM F436 (Hardened structural washer for high-strength bolts)

  • ISO 9001 certified manufacturing

Applications

  • General machinery and equipment assembly

  • Automotive manufacturing and repair

  • Steel structure construction and bridge projects

  • Heavy equipment and agricultural machinery

  • Furniture manufacturing and wood/metal assemblies

  • Wind power equipment and renewable energy projects

  • Pipeline support systems (pressure-retaining assemblies: PN6–PN64, Class 150–2500)

✅ Why Choose Malaxy Plain Washers?

  • Consistent dimensional accuracy ensures compatibility with standard bolts and nuts

  • Wide material and finish selection for corrosion resistance in any environment

  • Hardened options (ASTM F436) prevent embedding and preload loss under high bolt tension

  • OEM & custom sizes available upon request

  • Bulk packaging and flexible MOQ for B2B buyers

  • Competitive pricing from a trusted China fastener manufacturer

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