Nylon Flat Washer 5/16", 0.62" Thick, OD 7/8"
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A marine-grade nylon flat washer sized for 5/16" hardware. Helps create a smooth bearing surface under bolt heads and spreads the load over a wider area.
Key Features
- Nylon flat washer for use under bolt heads to help distribute fastener load
- Sized for 5/16" hardware (per product title)
- Thick, durable nylon body for applications where you want a non-metallic bearing surface
- Compact, easy-to-stock bulk fastener option for routine maintenance and repairs
Intended Use
- Marine and boating fastener applications
- General-purpose mounting and hardware projects that call for a nylon flat washer
- Use under bolt heads or nuts when a smooth bearing surface is needed
Product Details
- Material: Nylon
- Washer size (per title): 5/16"
- Thickness (per title): 0.62"
- Outside Diameter (OD) (per title): 7/8"
- SKU: 50-01031
Parts Desk Insights
Best Use Case: Use this nylon flat washer under the head of a 5/16" bolt (or under a nut) when you want to help distribute clamping force and provide a smooth bearing surface without a metal washer contacting the mating material.
Common Issues: If the washer seems too tight or loose, re-check the bolt size against the 5/16" hardware requirement and confirm you’re using the correct outside diameter and thickness for the fastener stack. For best results, also inspect the mating surface for sharp edges or debris that could affect seating.
Related Products & Accessories
- Browse Fasteners & Mounting - If you need matching washers, hardware, or mounting accessories, check the Fasteners & Mounting collection.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.