S-90471A443 10-32 x 1 1/4" ASME B18.6.3 Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with zinc-plated steel construction for reliable performance in demanding environments
• Superior holding power with 60,000 psi tensile strength and Rockwell B70 hardness for secure, long-lasting fastening
• Precise thread engagement with Class 2A thread fit and UNF fine threads ensuring vibration resistance and consistent clamping force
• Efficient installation with Phillips No. 2 drive and standard 100° countersink angle for flush mounting and reduced assembly time
• Full thread coverage along the 1-1/4" length provides maximum grip and adjustability in various material thicknesses
• Regulatory compliance with ASME B18.6.3 standards and environmental regulations for quality assurance and safe usage
• Versatile right-hand threading compatible with standard tools and industrial applications for straightforward installation

Professional Applications & Engineering Value

These 10-32 UNF fine thread flat head screws deliver exceptional engineering value in industrial assemblies where space constraints and surface finish are critical. The zinc-plated steel material provides essential corrosion protection, extending service life in machinery, electronics enclosures, and automotive components. The fully threaded design ensures uniform stress distribution, preventing loosening under vibration—a common failure point in dynamic environments. With a standard 100° countersink angle, these screws sit flush with surfaces, eliminating protrusions in precision equipment. The Phillips drive offers reliable torque transfer, reducing cam-out risks during high-volume assembly operations. Ideal for metal fabrication and OEM applications, these fasteners solve alignment and durability challenges while maintaining ASME B18.6.3 dimensional consistency.

Specification Summary & Compliance

This product maintains Class 2A thread fit tolerance per UNF standards, ensuring precise interchangeability. Manufacturing adheres to ASME B18.6.3 specifications for dimensional accuracy and mechanical properties. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental safety and restricted substance control. The screws feature a consistent fine thread pitch with right-hand orientation and are fully threaded to maximize engagement strength across the entire 1-1/4" length.