S-92210A132 5-44 x 1/4" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
• Precise, secure fastening ensured by Class 3A thread fit and UNF fine threading for vibration resistance and reliable assemblies
• High mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications
• Efficient installation and flush seating thanks to the 82° countersink angle and 5/64" hex drive for clean, aerodynamic surfaces
• Full thread engagement along the 1/4" length provides maximum grip and load distribution
• Compliance with major standards including ASME B18.3, RoHS 3, and REACH for quality assurance and environmental safety
• Right-hand threading ensures standard, intuitive installation in most machinery and equipment

Professional Applications & Engineering Value

These 5-44 UNF Class 3A flat head screws are engineered to address critical challenges in precision assembly and industrial equipment. Made from 18-8 stainless steel with a passivated finish, they resist corrosion in moist or chemical-exposed settings, reducing maintenance and replacement costs. The fine thread spacing and Class 3A fit deliver tight tolerances, minimizing loosening under vibration—essential for aerospace, automotive, and electronics enclosures. The 82° countersink angle and hex drive enable quick, flush mounting, streamlining production lines while maintaining structural integrity under high-stress loads up to 70,000 psi.

Specification Summary & Compliance

This screw adheres to ASME B18.3 specifications, with precise Class 3A thread fit and UNF fine threading for consistent performance. Dimensions include a 1/4" length, 0.125" thread diameter, and 5/64" hex drive. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring environmental safety and regulatory acceptance in global markets.