S-91400A062 2-56 x 1/2" FF-S-92, QQ-P-35, MS51957-7 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 environments and extended service life
• High tensile strength of 80,000 PSI ensures reliable, vibration-resistant fastening in demanding industrial applications
• Coarse UNC threading with Class 2A fit provides quick installation and secure holding power in various materials
• Fully threaded 1/2" length offers maximum grip range and adjustment flexibility for assembly efficiency
• Standard pan head with Phillips No. 1 drive enables easy installation with common tools while maintaining a low-profile appearance
• Compliance with Fed. Spec. FF-S-92, QQ-P-35, and MS51957-7 guarantees consistent quality and interchangeability for military and industrial use
• RoHS 3 and REACH compliant ensures environmental safety and regulatory acceptance in global markets

Professional Applications & Engineering Value

These 2-56 UNC pan head screws deliver exceptional engineering value in applications where corrosion resistance and mechanical reliability are critical. The passivated 18-8 stainless steel construction prevents oxidation and chemical degradation, making them ideal for electronics enclosures, machinery panels, and outdoor equipment. The coarse thread design combined with Class 2A thread fit ensures rapid assembly and secure fastening in plastics, sheet metal, and soft alloys, reducing installation time and preventing cross-threading issues. With full threading along the 1/2" length, these screws provide uniform clamping force and accommodate material thickness variations, solving common alignment challenges in multi-component assemblies while maintaining 80,000 PSI tensile strength for long-term structural integrity.

Specification Summary & Compliance

This pan head screw features precise 2-56 UNC coarse threads with Class 2A thread fit tolerances, ensuring consistent performance and interchangeability. Manufacturing complies with Fed. Spec. FF-S-92, QQ-P-35, and MS51957-7 standards for dimensional accuracy and material properties. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting current environmental regulations for hazardous substance restrictions and chemical safety in industrial applications.