[100 PKG] Hex Head Cap Screws Grade 8 Steel Plain (USA Made) 5/16-18 x 7/8

Hex Head Cap Screws Grade 8 Steel Plain (USA Made) 5/16-18 x 7/8 are high-strength fasteners engineered for demanding industrial, automotive, and equipment applications. Made in the USA from Grade 8 steel, these plain finish hex cap screws deliver exceptional strength and reliable performance in assemblies that require durable, dependable fastening.

• Size / Thread: 5/16-18 UNC, length 7/8″ (overall length).
• Material: Grade 8 steel for superior tensile and shear strength.
• Finish: Plain (unplated) steelready for custom finishing or coating.
• Head Type: Hex head cap screw for maximum drive torque and equipment compatibility.
• Made In: USA-made, supporting domestic manufacturing.
• Applications: Ideal for automotive, machinery, heavy equipment, and general purpose assemblies requiring high-strength fasteners.
• Installation: Use with corresponding nuts and washers; torque to manufacturer specifications for best results.

Whether you’re upgrading existing hardware or outfitting a new build, these Grade 8 hex head cap screws provide the strength you need with dependable, long-lasting performance.