Description
Hex Head Cap Screws Grade 8 steel, Plain finish, and USA Made are built to handle heavy-duty applications with confidence. Sized at 3/8-24 x 4-1/2, this fastener delivers precise engagement and strong clamping force for automotive, machinery, and industrial equipment projects.
Key specifications
- Material: Grade 8 steel for exceptional strength and resilience
- Finish: Plain (unplated) steel suitable for coating or painting
- Head type: Hex head for high torque transfer and easy driving with wrenches or sockets
- Thread size: 3/8-24 (3/8 inch diameter, 24 threads per inch) — fine-thread for strong engagement
- Length: 4-1/2 inches
- Made in: USA
- Applications: Automotive, machinery, equipment assemblies, and other heavy-duty projects
Designed for reliability under load, these Grade 8 hex screws resist wear in demanding environments and provide consistent performance across assemblies. Use them where a strong, durable fastener is essential, and finish with your preferred coating or treatment as needed.
Can We Help?
If you’re not sure that this product is right for you, give us a call!
800-222-0324

