S-90046A116 10-32 x 1/2" NAS1801-3-8 High-Strength Steel Hex Head Screws with Phillips Drive

Key Features & Benefits at a Glance

• Superior corrosion resistance with cadmium plating, extending service life in harsh industrial environments
• Exceptional tensile strength of 160,000 PSI ensures reliable performance under high-stress applications
• Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant fastening
• Partially threaded design allows for controlled clamping force and reduced thread galling
• Dual external hex/Phillips drive offers versatile installation options with standard tools
• Rockwell C34 hardness maintains structural integrity and wear resistance over repeated use
• NAS1801-3-8 compliance guarantees aerospace-grade quality and traceability

Professional Applications & Engineering Value

These 10-32 UNF hex head screws deliver critical reliability in aerospace, heavy machinery, and precision equipment applications where vibration resistance and consistent clamp load are paramount. The cadmium-plated steel construction combats oxidation in demanding environments, while the fine UNF threads and Class 3A fit prevent loosening under dynamic loads. The partially threaded shank concentrates stress away from the head, reducing the risk of shear failure. With 160,000 PSI tensile strength and external hex/Phillips drive compatibility, these fasteners provide engineers with a versatile, high-performance solution for critical assemblies requiring repeatable torque accuracy and long-term durability.

Specification Summary & Compliance

Manufactured to inch system dimensions with 10-32 UNF fine threads and Class 3A thread fit for precision engagement. Complies with NAS1801-3-8 specifications for aerospace fasteners, RoHS 3 (2015/863/EU) for hazardous substance restriction, and REACH (EC 1907/2006) for chemical safety. Threading is partially applied with minimum 7/16" thread length on a 1/2" overall length screw.