S-91400A052 2-56 x 3/16" FF-S-92, QQ-P-35, MS51957-2 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
• High tensile strength of 80,000 psi ensures reliable fastening performance under demanding mechanical loads
• Excellent thread engagement with Class 2A fit and coarse UNC threading for quick assembly and vibration resistance
• Optimized drive efficiency featuring Phillips No. 1 drive for secure torque transmission and reduced cam-out risk
• Full threading design provides maximum grip length and uniform stress distribution across the entire fastener
• Compliant with major industry standards including Fed. Spec. FF-S-92 and MS51957-2 for guaranteed quality and interoperability
• Environmental regulation compliance with RoHS 3 and REACH ensures safe use in regulated industries worldwide

Professional Applications & Engineering Value

These 2-56 UNC pan head Phillips screws deliver exceptional engineering value in precision assembly applications where corrosion resistance and mechanical reliability are critical. The passivated 18-8 stainless steel construction provides superior protection against oxidation and chemical exposure, making these industrial screws ideal for electronics enclosures, instrumentation, marine equipment, and food processing machinery. The combination of coarse thread spacing and Class 2A thread fit ensures rapid installation with consistent clamping force, while the rounded pan head profile offers a finished appearance and prevents snagging. With 80,000 psi tensile strength and full threading, these fasteners maintain joint integrity in vibration-prone environments, solving common failure points in mechanical assemblies.

Specification Summary & Compliance

This fastener features precision 2-56 UNC coarse threads with Class 2A fit tolerance for consistent engagement. Manufacturing complies with Fed. Spec. FF-S-92 and MS51957-2 specifications, ensuring dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting the latest restrictions on hazardous substances for global market acceptance.