Description
Engineered for strength and reliability, the Hex Head Cap Screws Grade 5 Steel Plain Fine Thread (USA Made) 5/8-18 x 3 1/4 delivers high-torque performance in demanding assemblies. Built in the USA, these fasteners are crafted to meet rigorous standards for durability and consistency.
Key specifications
- Head type: Hex Head Cap Screw
- Material: Grade 5 steel
- Finish: Plain (uncoated)
- Thread: Fine thread, 18 threads per inch
- Size: 5/8 inch diameter, 3 1/4 inch length
- Quality: USA made manufacturing
Why choose Grade 5 steel fasteners
Grade 5 steel provides excellent tensile strength and resilience for critical fastening applications, offering superior performance over lower-grade fasteners in high-stress environments. The plain finish reduces surface reflectivity and keeps a clean, uncluttered look in assemblies where plating is not required.
Applications
- Automotive and machinery assembly
- Heavy equipment and agricultural implements
- Industrial equipment and general mechanical fastening
Tip: For best results, pair with compatible nuts and washers, and use a thread lubricant to reduce friction and prevent galling when tightening. Proper torque should be applied according to your equipment specifications.
Invest in American-made quality with these Hex Head Cap Screws—engineered for strength, built for reliability, and manufactured in the USA to support domestic sourcing and consistent supply.
Can We Help?
If you’re not sure that this product is right for you, give us a call!
800-222-0324