Stainless Steel Fender Washers 1-4 3-8 for Outdoor Use Corrosion-Resistant

Descrição

Stainless Steel Fender Washers 1-4 3-8 for Outdoor Use Corrosion-Resistant

1. Definition

A fender washer is a type of flat washer characterized by its large outer diameter relative to its inner hole size. It is designed to distribute the load of a fastener (such as a bolt or screw) over a wider area, preventing damage to soft materials or providing reinforcement in structural applications.

2. Specifications

Fender washers typically have the following specifications:

Outer Diameter (OD): Larger than standard washers (commonly 1″ to 3″ or more).
Inner Diameter (ID): Matches the bolt/screw size (e.g., #6, 1/4″, 5/16″).
Thickness: Varies (e.g., 0.06″ to 0.12″ for standard washers).
Common Sizes:
#6 (OD: ~1″, ID: ~0.25″)
1/4″ (OD: ~1.25″, ID: ~0.281″)
5/16″ (OD: ~1.5″, ID: ~0.328″)

3. Materials

Carbon Steel: Most common, economical, and strong.
Stainless Steel (304/316): Corrosion-resistant for outdoor/marine use.
Zinc-Plated Steel: Provides rust protection.
Aluminum: Lightweight and corrosion-resistant.
Brass: Used in electrical or decorative applications.

4. Surface Treatments

To enhance durability and corrosion resistance, fender washers may undergo:

Zinc Plating: Basic rust protection.
Hot-Dip Galvanizing: Thicker zinc coating for harsh environments.
Black Oxide: Improves aesthetics and mild corrosion resistance.
Passivation: For stainless steel to enhance corrosion resistance.

5. Applications

Automotive: Mounting fenders, body panels, and trim.
Construction: Reinforcing wood, drywall, or metal structures.
Marine: Preventing bolt heads from sinking into soft materials.
Electrical: Distributing load in junction boxes or mounting hardware.
HVAC & Plumbing: Securing pipes, ducts, and fixtures.