S-92423A113 4-40 x 1" FF-S-86, NAS1352N04-16, SAE AMS5737 High-Strength A286 Stainless Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional strength-to-weight ratio with 160,000 psi tensile strength and 120,000 psi yield strength for reliable performance in high-stress applications
• Superior corrosion resistance through A286 stainless steel material and passivated finish, ensuring longevity in harsh industrial environments
• Precise thread engagement with Class 3A fit and UNRC coarse threads for secure fastening and vibration resistance
• Optimized drive performance featuring standard socket head with 3/32" hex drive for maximum torque transmission and strip resistance
• Full thread coverage across the entire 1" length for uniform stress distribution and installation flexibility
• Consistent hardness at Rockwell C33 for maintained mechanical properties under repeated loading
• Regulatory compliance assurance meeting critical aerospace and industrial standards including Fed. Spec. FF-S-86, NAS1352N04-16, and SAE AMS5737

Professional Applications & Engineering Value

This 4-40 thread socket head cap screw delivers exceptional engineering value in demanding applications where reliability is paramount. The A286 stainless steel construction combined with passivated finish provides outstanding corrosion resistance for aerospace components, industrial machinery, and marine equipment exposed to aggressive environments. The Class 3A thread fit ensures precise engagement with mating components, reducing the risk of vibration-induced loosening in dynamic assemblies. With its 160,000 psi tensile strength and Rockwell C33 hardness, this fully threaded fastener maintains structural integrity under extreme mechanical stress, making it ideal for critical joints in engine components, precision instruments, and heavy-duty equipment where failure is not an option.

Specification Summary & Compliance

Manufactured to exacting standards with Class 3A thread fit precision and UNRC coarse thread profile in 4-40 size. Compliant with Fed. Spec. FF-S-86, NAS1352N04-16, and SAE AMS5737 specifications for aerospace and industrial applications. Fully meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets. Inch system measurements include 1" length, 0.183" head diameter, and 3/32" hex drive size for standardized installation.