S-91772A086 2-56 x 1" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh industrial environments
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for reliable load-bearing performance
• Precision thread engagement through Class 2A fit and UNC coarse spacing, ensuring secure fastening and vibration resistance
• Optimized drive efficiency with Phillips No. 1 drive and rounded pan head design for easy installation and reduced cam-out
• Full-length threading provides maximum grip and uniform stress distribution across the entire 1" length
• Regulatory compliance assurance meeting ASME B18.6.3 standards and environmental regulations including RoHS 3 and REACH
• Right-hand thread design with standard inch measurements for compatibility with existing industrial equipment and tooling

Professional Applications & Engineering Value

This 2-56 UNC machine screw delivers critical engineering value in demanding applications where corrosion resistance and mechanical reliability are paramount. The passivated 18-8 stainless steel construction provides exceptional protection against oxidation and chemical exposure, making it ideal for electronics assembly, machinery components, and outdoor equipment. The combination of coarse thread spacing and Class 2A thread fit ensures rapid installation while maintaining precise tolerance control, significantly reducing assembly time in high-volume manufacturing. The rounded pan head profile with Phillips No. 1 drive offers superior torque transmission and prevents surface damage during installation. These features collectively address common industrial challenges including vibration-induced loosening, material degradation, and installation inefficiency, providing a durable fastening solution for OEMs and maintenance operations across multiple sectors.

Specification Summary & Compliance

Manufactured to exacting inch system dimensions including 1" length and 0.167" head diameter. Thread specifications include 2-56 UNC coarse spacing with Class 2A thread fit tolerance. Complies with ASME B18.6.3 manufacturing standards and meets environmental regulations including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance. Material certification confirms Rockwell B70 hardness and 70,000 psi tensile strength performance characteristics.