Description
Upgrade your rig with Hex Head Cap Screws Grade 8 Steel Plain (USA Made) 5/8-18 x 1-1/4. These high-strength fasteners are crafted from premium Grade 8 steel and finished plain for maximum durability in demanding assemblies. Made in the USA, they deliver reliable performance in rugged environments where safety and structural integrity matter.
Key features
- Material: Grade 8 steel
- Finish: Plain (uncoated)
- Head style: Hex head cap screw
- Thread size: 5/8-18 UNC
- Length: 1-1/4 inches
- Country of origin: USA-made
- Drive type: Hex drive for standard wrenches and sockets
Applications include heavy machinery, automotive assemblies, equipment mounting, and other high-stress joints where a strong, dependable fastener is essential. The plain finish keeps costs down and allows for in-service painting or plating if needed, while Grade 8 steel provides superior shear and tensile strength compared to lower grades.
To ensure the best performance, pair these hex head cap screws with matching nuts or tapped holes that meet 5/8-18 UNC specifications, and tighten using the appropriate torque for Grade 8 fasteners based on your materials and load requirements.
Can We Help?
If you’re not sure that this product is right for you, give us a call!
800-222-0324

