S-91400A058 2-56 x 3/8" FF-S-92, QQ-P-35, MS51957-5 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 performance under demanding mechanical loads
• Class 2A thread fit provides consistent engagement and easy assembly while maintaining precision tolerances
• Fully threaded UNC coarse design delivers faster installation and superior holding power in various materials
• Phillips #1 drive system offers familiar, secure tool engagement for efficient installation
• Pan head profile combines low-profile aesthetics with excellent bearing surface for secure fastening
• Comprehensive regulatory compliance including RoHS 3 and REACH ensures environmental and safety standards are met

Professional Applications & Engineering Value

Engineered for precision and durability, these 2-56 UNC pan head screws solve critical fastening challenges in industrial applications. The passivated 18-8 stainless steel construction provides exceptional resistance to corrosion and chemical exposure, making them ideal for electronics, machinery, and outdoor equipment where environmental factors threaten fastener integrity. The coarse thread design ensures reliable performance in softer materials and plastic assemblies, while the fully threaded right-hand configuration maximizes pull-out strength and vibration resistance. With their Phillips drive system and standardized pan head profile, these screws enable rapid assembly and disassembly in maintenance-intensive environments, reducing downtime and improving operational efficiency across manufacturing, aerospace, and automotive sectors.

Specification Summary & Compliance

This 3/8" length screw features precision Class 2A thread fit with UNC coarse threading (56 TPI) meeting exacting dimensional standards. Manufacturing complies with Fed. Spec. FF-S-92, QQ-P-35, and MS51957-5 specifications, ensuring consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and substance restriction requirements for global industrial applications.