Our hinge ring washers are precision flat ring washers that provide a smooth, low-friction bearing surface between pivoting components. Placed at a hinge, linkage, or rotating joint, they space the parts accurately, reduce wear between mating faces, and allow free, controlled rotation;  a simple but essential component in hinges, pivots, and articulated assemblies.

Hinge Ring Washer - Metric Sizes

What Is a Hinge Ring Washer?

A hinge ring washer is a precision annular (ring-shaped) washer used at a pivoting joint to provide a controlled bearing and spacing surface between two components that rotate relative to one another. Unlike a plain fastening washer, whose job is simply to spread clamp load, a hinge ring washer is chosen for its flat, parallel faces and controlled thickness, which set the gap between hinge leaves or linkage parts and give a smooth surface for rotation. This reduces friction and wear at the pivot, ensuring the joint moves freely and consistently over its service life.

Hinge ring washers are used in hinges, door and gate assemblies, mechanical linkages, levers, and any articulated connection where two parts must rotate around a common pin or bolt. By separating the mating faces with a hard, accurately dimensioned ring, they prevent the components from binding or wearing directly against each other, and they allow the pivot clearance to be set precisely. Available in steel for strength and durability and in stainless for corrosion resistance, they suit both indoor mechanical assemblies and exposed outdoor hinges.

Key Features and Benefits

• Smooth Pivot Surface: Flat, parallel faces provide a low-friction bearing between rotating hinge and linkage parts.
• Accurate Spacing: Controlled thickness sets the precise gap between hinge leaves or pivoting components.
• Reduced Wear: The hard ring separates mating faces, preventing them from wearing directly against each other.
• Free, Consistent Rotation: Maintains smooth, binding-free movement over the life of the pivot joint.
• Steel and Stainless Options: Durable steel for strength or stainless for corrosion-resistant outdoor hinges.

Materials and Finishes

• Carbon Steel (Zinc Plated): Durable, cost-effective washers for general hinge and linkage assemblies.
• Hardened Steel: Wear-resistant option for heavily loaded or frequently cycled pivots.
• Stainless Steel (A2 / A4): Corrosion-resistant washers for outdoor gates, marine fittings, and exposed hinges.

Standards Compliance

• DIN 125 / ISO 7089 — Reference standards for flat ring washer dimensions.
• Manufactured to controlled thickness and flatness tolerances for pivot applications. 

Size Range and Availability

Available across common metric hinge and pin sizes from M4 through M20, in zinc-plated steel, hardened steel, and A2/A4 stainless.

Frequently Asked Questions (FAQs)

1. What is a hinge ring washer used for?

A hinge ring washer provides a smooth bearing and spacing surface at a pivoting joint, used in hinges, gates, linkages, and levers to reduce friction and wear and allow free, controlled rotation around a pin or bolt.

2. How is a hinge ring washer different from a flat washer?

A plain flat washer spreads clamp load under a fastener, while a hinge ring washer is chosen for its flat parallel faces and controlled thickness to act as a bearing and spacer at a rotating joint.

3. Where are hinge ring washers used?

They are used in hinges, door and gate assemblies, mechanical linkages, levers, and any articulated joint where two components rotate around a common pin or bolt and need a smooth pivot surface.

4. Do hinge ring washers reduce wear?

Yes. By separating the two mating faces with a hard, accurately dimensioned ring, they prevent the components from wearing directly against each other and reduce friction at the pivot.

5. Are hinge ring washers available in stainless steel?

Yes. We stock A2 and A4 stainless hinge ring washers for corrosion-resistant use on outdoor gates, marine fittings, and exposed hinge assemblies.

6. How do I choose the right hinge ring washer size?

Select the washer to match the pivot pin or bolt diameter and the required spacing between components. The thickness sets the pivot gap, so choose it to suit the clearance needed at the joint.

7. Can hinge ring washers set pivot clearance?

Yes. Because they are made to a controlled thickness, hinge ring washers can be used to set the precise clearance between hinge leaves or linkage parts, ensuring free movement without excess play.

8. What material is best for outdoor hinges?

Stainless steel (A2 or A4) is best for outdoor and marine hinges, resisting corrosion in wet and coastal conditions. Zinc-plated steel suits general indoor and light outdoor use.

9. Do hinge ring washers need lubrication?

For smoother, longer-lasting pivots the bearing faces are often lightly lubricated, though the hard washer surface already reduces friction. Lubrication is recommended on frequently cycled or heavily loaded hinges.

10. What sizes do you stock for hinge ring washers?

We stock common metric sizes from M4 through M20 in zinc-plated steel, hardened steel, and A2/A4 stainless, matched to standard hinge and pin dimensions.