S-90780A580 5/16"-18 x 3/4" ASTM F468, MIL-S-1222 Nickel Alloy Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 400 Nickel material, ideal for harsh industrial environments
• High tensile strength of 80,000 psi ensures reliable performance under heavy loads
• Class 2A thread fit provides smooth assembly and consistent engagement
• Fully threaded design offers maximum grip and uniform load distribution
• External hex drive allows for easy installation with standard tools
• Rockwell B80 hardness maintains structural integrity under stress
• Coarse UNC threading enables quick installation and reduced cross-threading risks

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these 400 Nickel hex head screws deliver superior performance where corrosion resistance and high strength are critical. The coarse UNC thread and Class 2A fit ensure rapid, secure fastening in heavy machinery, marine equipment, and chemical processing systems. With 80,000 psi tensile strength and fully threaded design, they prevent loosening under vibration and distribute stress evenly, reducing failure risks. The external hex drive simplifies maintenance in confined spaces, while the nickel composition resists oxidation and chemical degradation, extending service life in aggressive environments.

Specification Summary & Compliance

This 5/16"-18 UNC hex head screw features a Class 2A thread fit per inch-based standards, ensuring precise dimensional accuracy. It complies with ASTM F468 and MIL-S-1222 specifications for material and manufacturing quality. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for hazardous substances.