- Stock 5
Fender Washer · 3/8 in ID x 1-1/2 in OD - Zinc-Plated Steel - Generic 3/8X1.5FENDER
Zinc-plated steel fender washer with 3/8 in inside diameter and 1-1/2 in outside diameter for spreading load over thin material, sheet metal, boxes, panels, and mounting surfaces. Commonly used where a standard flat washer does not provide enough bearing area.
What this product is for
This fender washer is used to spread the load of a bolt or screw over a larger surface area than a standard flat washer. It is commonly selected for sheet metal, electrical enclosures, panel mounting, brackets, and other installations where pull-through protection is important.
Use for
Use for 3/8 in fasteners, oversized bearing surface applications, light equipment mounting, electrical boxes, panel hardware, strut accessories, and repairs where thin material needs added support. The 1-1/2 in outside diameter provides more coverage than a standard washer.
Avoid for
Avoid using where stainless steel, hot-dip galvanized, or specialty corrosion-resistant hardware is required, or where a structural engineered washer is specified. Do not assume zinc plating is suitable for highly corrosive outdoor, marine, or chemical environments.
Best for
Best for electricians and contractors securing components to sheet metal or other thin mounting surfaces where a larger contact area helps reduce deformation. Also useful when covering oversized or worn holes during retrofit work.
Installed in
Typically installed in electrical rooms, commercial tenant fit-outs, service spaces, maintenance work, utility areas, and general indoor construction. It may also be used in damp locations where moderate corrosion resistance is acceptable.
Why this product exists
Fender washers exist to provide a much larger outside diameter than standard washers, helping distribute clamping force and reduce the chance of pull-through or surface damage. This is especially useful on thinner materials and uneven mounting surfaces.
Compared with similar products
Compared with a standard flat washer, a fender washer provides a larger bearing surface. Compared with stainless steel versions, zinc-plated steel is typically a more economical choice for general indoor use. Actual corrosion performance depends on installation conditions and exposure.
Specifications
- Product type: Fender washer
- Fastener size: 3/8 in
- Inside diameter: approximately 3/8 in (9.5 mm)
- Outside diameter: 1-1/2 in (38.1 mm)
- Material: Steel
- Finish: Zinc-plated
- Application: Load distribution and pull-through reduction on thin materials
- Typical use: Electrical panels, enclosures, brackets, sheet metal, and general fastening
- ApplicationLoad distribution and pull-through reduction on thin materials | Electrical
- MaterialSteel
- FinishZinc-plated
- Outside Diameter1-1/2 in (38.1 mm)
- Inside Diameterapproximately 3/8 in (9.5 mm)
- BrandsWhite Label
- Stock in Elmira1
- Stock in Flesherton1
Aptico Supply Delivery
Fast Electrical Supply Delivery Across Ontario
Local delivery routes, pickup options, and contractor-focused service from our Elmira and Flesherton locations.

Delivery Built Around Electrical Contractors
Aptico Supply helps electricians, contractors, and commercial buyers get the electrical materials they need without unnecessary delays. Whether you are ordering for a jobsite, restocking service inventory, or arranging pickup, our delivery options are designed to keep work moving.
Free Daily Delivery
Free daily delivery is available for larger contractor accounts.
- Order by 9:00 AM for morning delivery
- Order by 2:00 PM for afternoon delivery
- Available in qualifying local delivery areas
Free Weekly Delivery
Free weekly delivery is available for smaller accounts in select service areas.
- Elmira area delivery: Tuesday
- Flesherton area delivery: Thursday
- Order by 11:00 AM on the route day
Pickup Options
Pickup is available from our Ontario locations for customers who prefer to collect their order directly.
- Elmira pickup available
- Flesherton pickup available
- Call ahead for large or special-order items
Local Delivery Areas
See our local delivery coverage below. Delivery charges may apply outside regular route areas or for oversized items.
Delivery Questions
Do you offer free delivery?
Yes, free delivery is available for qualifying contractor accounts and selected local delivery routes.
Can I pick up my order?
Yes, pickup is available from our Elmira and Flesherton locations.
Do delivery charges apply?
Delivery charges may apply outside regular local routes, for smaller orders, or for oversized and heavy items.
Can you deliver to jobsites?
Yes, jobsite delivery may be available depending on the order size, location, and delivery schedule.
Need Electrical Supplies Delivered?
Contact Aptico Supply to confirm your delivery options, pickup availability, or contractor account eligibility.
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