Hex Head Cap Screws Grade 2 Steel Black Oxide 5/16-18 X 1-1/2 are the go-to choice for general purpose fastening in light- to mid-duty applications. These fasteners combine reliable strength with a corrosion-resistant finish, making them ideal for indoor machinery, equipment, and DIY projects.

Made from dependable Grade 2 steel, these hex head cap screws deliver solid clamping power for everyday tasks. The black oxide coating provides modest corrosion resistance and a low-gloss, professional look that blends well with dark substrates and reduces glare during installation.

Specifications at a glance: diameter 5/16 inch, thread pitch 18 per inch (5/16-18), length 1-1/2 inches, hex drive for easy installation with standard wrenches or sockets, and a coarse-thread pattern designed for quick, secure assembly.

Ideal applications include machinery, automotive components, equipment assemblies, and a wide range of DIY projects where a reliable, affordable fastener is required. They pair with standard nuts and tapped holes sized for 5/16-18 threads and are suitable for indoor use where cosmetic appearance and functional performance are both important.

Why choose these Hex Head Cap Screws: available, economical, and proven for everyday fastening tasks. The black oxide finish helps minimize glare and wear visibility while providing adequate protection for indoor environments.