Description
Engineered for heavy-duty fastening, our Hex Head Cap Screws Grade 8 Steel Plain (USA Made) 5/16-18 x 3/4 deliver exceptional strength and reliability for demanding assemblies. Made in the USA from hardened steel, these screws offer robust torque resistance and long-lasting performance in rugged environments.
Key features
- Material: Grade 8 steel with a plain, uncoated finish for versatile compatibility across fasteners and coatings.
- Head type: Hex head cap screw designed for secure driving with common wrenches or sockets.
- Thread size: 5/16-18 standard coarse thread for robust engagement.
- Length: 3/4 inch overall length suitable for a range of joining thicknesses.
- Finish: Plain finish; ready for additional coatings if needed.
- Origin: USA made, supporting domestic manufacturing.
Why choose Grade 8 hex screws
Grade 8 fasteners are engineered for high-strength assemblies and demanding environments. The hardened steel construction provides superior torque tolerance and fatigue resistance, making these screws ideal for automotive, machinery, and industrial equipment applications. Pair with compatible nuts and washers for a secure, long-lasting connection.
Specifications
- Thread size: 5/16-18
- Length: 3/4 in
- Material: Grade 8 steel
- Finish: Plain
- Head style: Hex head
- Type: Cap screw
- Origin: USA
Add these Grade 8 hex cap screws to your cart for reliable, high-strength fastenings in a wide range of projects.
Can We Help?
If you’re not sure that this product is right for you, give us a call!
800-222-0324

