Hex Nut 5/16-18
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
A general-purpose hex nut sized for 5/16-18 threaded hardware, made from 18-8 stainless steel for corrosion resistance in demanding environments.
Key Features
- Thread size: 5/16-18 (coarse/UNC)
- Nut style: hex nut for standard wrench/grip fastening
- Material: 18-8 stainless steel
Intended Use
- Marine and boat hardware installations
- General maintenance and repair using 5/16-18 threaded fasteners
- Fastening applications requiring corrosion-resistant 18-8 stainless steel hardware
Product Details
- Hex Nut size: 5/16-18
- Material: 18-8 Stainless Steel
- Product SKU: 50-00607
- Category: Bulk Fasteners
Parts Desk Insights
Best Use Case: Use this 5/16-18 hex nut to secure compatible hex-head bolts or hex cap screws where corrosion resistance is important.
Common Issues: Make sure the mating threads match 5/16-18 coarse. If the nut binds or will not seat, double-check thread pitch and alignment, and verify any related washers/gaskets in the joint.
Related Products & Accessories
- Browse Fasteners & Mounting - Find matching nuts, bolts, and mounting hardware by size and material.
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.