S-91772A080 2-56 x 7/16" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from passivated 18-8 stainless steel construction, ensuring long-term reliability in harsh environments
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for secure, vibration-resistant fastening
• Optimized drive engagement through Phillips No. 1 drive design, preventing cam-out during installation
• Full-threaded design maximizes grip length and distributes clamping force evenly across the entire fastener
• Precision threading with Class 2A fit and UNC coarse thread profile ensures smooth installation and consistent performance
• Standard pan head profile provides a balanced combination of low-profile appearance and sufficient bearing surface
• Regulatory compliance meets ASME B18.6.3 specifications while adhering to RoHS 3 and REACH environmental standards

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these 2-56 UNC pan head Phillips machine screws deliver critical performance advantages where corrosion resistance and mechanical reliability are paramount. The passivated 18-8 stainless steel construction provides exceptional protection against oxidation and chemical exposure, making these fasteners ideal for electronics assembly, precision instrumentation, marine equipment, and food processing machinery. The combination of fully threaded design and Class 2A thread fit ensures consistent clamping force distribution and eliminates the need for precise hole depth matching. The Phillips No. 1 drive system offers reliable torque transmission while the coarse UNC threading provides rapid installation in various materials, significantly reducing assembly time in high-volume manufacturing operations.

Specification Summary & Compliance

This 7/16" length machine screw features precision 2-56 UNC coarse threads with Class 2A tolerance for consistent fit and performance. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and mechanical properties. The fastener is fully compliant with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations for chemical safety, ensuring environmental responsibility in your supply chain.