Fender Washer - Manufacturer & Supplier in India

The fender washer is specifically designed for use on thin sheet metal. It stands out with its larger outer diameter relative to its center hole and is made from a thinner gauge metal compared to typical flat washers. Its name, however, pays homage to its original purpose of being used on automobile fenders.

Fender Washer Sizes and Dimensions

Bolt Size	Top Outside Diameter (A)	Bottom Outside Diameter (B)	Thickness (T)	Weight (grams)
1/2	1-1/4	2-1/4	1/8	35
5/8	1-1/2	2-1/2	5/32	45
3/4	1-3/4	2-3/4	3/16	55
7/8	2	3	7/32	70
1	2-1/4	3-1/4	1/4	95
1-1/8	2-1/2	3-1/2	5/16	130
1-1/4	2-3/4	4	3/8	160
1-1/2	3	4-1/2	7/16	220

Large OD (Outer Diameter): Covers more surface area to reduce pressure.
Thin Profile: Maintains a low profile under fasteners.
Hole Size: Typically sized for a specific bolt or screw.
Flat Design: Provides a smooth bearing surface.
Prevents fastener head from damaging material.
Distributes load evenly to minimize deformation.
Improves grip and stability in assemblies.
Helps seal joints and prevent leakage (especially in plumbing).

Material Options

Material	Corrosion Resistance	Common Usage
Stainless Steel (304/316)	Excellent	Marine, outdoor, food-grade
Zinc-Plated Steel	Good	General indoor applications
Aluminum	Moderate	Lightweight assemblies
Brass	Moderate	Decorative or non-magnetic uses
Nylon/Plastic	Low	Electrical insulation, non-metallic contact

Fender washers are flat washers with an extra-large outer diameter compared to the standard washers. This design helps to distribute the load over a wider surface area, making them ideal for use with thin or soft materials.

Material

Stainless Steel (304/316)

Inner Diameter

6.4 mm

Outer Diameter

25 mm to 30 mm

Thickness

1.5 mm to 2 mm

Larger Outer Diameter

The main purpose of a plain washer is to expand the contact area of a fastener, minimizing strain on the material being attached. This is particularly crucial when dealing with delicate materials or when the fastener hole exceeds the size of the fastener head.

Precise Central Hole

The inner diameter of fender, hex, and external tooth lock washers is designed to match the fastener precisely. This guarantees a secure hold and prevents any slipping while offering sturdy support.

Flat and Circular Shape

The fastener's stability is guaranteed by its flat and round shape, which also ensures uniform pressure distribution across the surface.

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