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Plain Washers

Plain Washers – DIN 125 / ISO 7089 / ASTM F436

Category: Washers | Type: Flat / Plain
Standard: DIN 125, ISO 7089, ASTM F436
Material: Mild Steel, Stainless Steel (SS 304, SS 316), Brass, Copper, PEEK, Nylon
Finish: Zinc Plated, Hot Dip Galvanized (HDG), Black Oxide, Natural (for polymer grades)
Sizes Available: M3 to M72 / Custom OD & ID / Imperial sizes on request

Product Description

Plain Washers, also known as flat washers, are thin, disc-shaped components with a central hole designed to distribute the load of threaded fasteners like bolts, screws, or nuts. Their primary function is to prevent damage to the surface material and to reduce friction and loosening during installation.

Manufactured under DIN 125 / ISO 7089 / ASTM F436 standards, our plain washers are available in various materials and finishes to suit diverse industrial needs. Whether you’re working in high-load, corrosive, or precision environments, SM Fasteners delivers durable washers that perform consistently and efficiently.

Applications

Plain washers are essential in almost every fastening assembly and are used in:

  • Automotive assemblies & chassis joints

  • Electrical enclosures & panel fittings

  • Construction, heavy machinery & structures

  • Appliance manufacturing & white goods

  • Marine and offshore installations (SS316, PEEK)

  • Electronics & cleanroom applications (Nylon, PEEK)

Technical Specifications

Parameter Specification
Standards DIN 125, ISO 7089, ASTM F436
Available Sizes M3 to M72 / Custom inner & outer diameters
Material Options MS, SS 304/316, Brass, Copper, PEEK, Nylon
Finish Options Zinc Plated, HDG, Black Oxide, Natural
Hardness Up to 200 HV (metallic), Up to 95 Shore D (polymer)
Temperature Range Metal: -50°C to +400°C, PEEK: Up to 260°C
Compliance RoHS, ISO 9001, REACH, ASTM

Why Choose Our Plain Washers?

✅ Precision-manufactured to DIN/ASTM standards
✅ Even load distribution and surface protection
✅ Multiple materials for varied industrial needs
✅ Corrosion resistance for marine and outdoor use
✅ Electrical insulation with Nylon & PEEK variants
✅ Available in bulk or small packaging as per project size

 

Packaging and Delivery

  • Bulk packed in HDPE bags or small boxes

  • Laser-marked labels for material & grade identification

  • Polybag sealing for PEEK/Nylon types

  • Delivery Timelines:
     • India: 3–5 working days
     • International: 7–12 working days via FedEx or DHL

Industries We Serve

  • Construction and Infrastructure

  • Electrical Panels and Switchboards

  • Marine and Offshore Structures

  • Oil & Gas Assemblies

  • Renewable Energy (Solar/Wind Mountings)

  • Medical Device Assemblies

  • Automotive Fastening and Suspensions

  • General Mechanical Assemblies

 

Documents Supplied

  • Material Test Certificates (MTC)

  • Dimensional Inspection Reports

  • Surface Finish & Coating Certificate

  • Compliance Documents (RoHS / REACH)

  • Heat Treatment Records (for hardened washers)

Request a Quotation

Need reliable Plain Washers for your mechanical or industrial application?

📧 Email: susheel@smfastners.com
📞 Phone: +91 8968469570
💬 WhatsApp Chat: Click Here

🔧 SM Fasteners – Supporting Every Bolt, One Washer at a Time.

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