S-92423A143 1/4"-20 x 6" ASME B18.3, NAS1352N4-96, SAE AMS5731, 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 and 120,000 psi yield strength for reliable performance in demanding applications
• Superior corrosion resistance through A286 stainless steel construction and passivated finish, extending service life in harsh environments
• Precision Class 3A thread fit ensures secure fastening with minimal backlash in critical assemblies
• High-temperature capability of A286 material maintains mechanical properties under thermal stress
• Optimized drive engagement with 3/16" hex socket provides secure tooling and reduces stripping risk
• Industry-standard compliance with NAS1352N4-96, ASME B18.3, and SAE AMS5731/5737 ensures interchangeability and quality
• Environmental regulation adherence with RoHS 3 and REACH compliance for global manufacturing acceptance

Professional Applications & Engineering Value

This high-strength socket head cap screw addresses critical engineering challenges in aerospace, automotive, and heavy machinery applications where reliability under extreme conditions is paramount. The A286 stainless steel composition delivers exceptional creep resistance and thermal stability up to 1300°F (704°C), making it ideal for engine components, turbine assemblies, and high-temperature processing equipment. The passivated finish provides an additional protective layer against chemical exposure and atmospheric corrosion, while the partially threaded design with UNRC coarse threads enables precise clamping force distribution and vibration resistance. With Rockwell C33 hardness and 160K psi tensile strength, this fastener maintains structural integrity in high-stress applications where common stainless steels would fail, reducing maintenance frequency and downtime in critical operations.

Specification Summary & Compliance

This 1/4-20 x 6" socket head cap screw features precision Class 3A thread fit with UNRC coarse thread profile and right-hand thread direction, ensuring optimal engagement in high-vibration environments. Manufacturing complies with ASME B18.3 dimensional standards and meets NAS1352N4-96 specifications for aerospace applications. Material certification includes SAE AMS5731 and AMS5737 for A286 stainless steel, guaranteeing consistent mechanical properties and heat treatment. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for global industrial markets requiring stringent material controls and sustainability standards.