Cap Screw - Hex Head, 5/16"-18 x 3/4"
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Cap Screw with Hex Head in size 5/16\"-18 by 3/4\" (thread: 5/16-18).
Made from 18-8 stainless steel for corrosion resistance, ideal for bulk fastener needs and environments requiring stainless hardware.
Compatible Applications
- Bulk fastener assemblies
- Marine and outdoor installations requiring corrosion resistance
- General equipment mounting where a hex-head cap screw is appropriate
Parts Desk Insight: Best use case — durable stainless steel hex cap screws for assemblies where corrosion resistance is important, such as outdoor or marine applications. Common issues to watch for: cross-threading during installation and over-tightening can damage threads; ensure proper alignment and correct engagement length.
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.