S-92423A137 1/4"-20 x 2 1/2" ASME B18.3, NAS1352N4-40, SAE AMS5731, SAE AMS5737 High-Strength A286 Stainless Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional strength and durability with 160,000 psi tensile and 120,000 psi yield strength, ideal for high-stress applications.
• Superior corrosion resistance due to A286 stainless steel material and passivated finish, extending service life in harsh environments.
• Precise Class 3A thread fit ensures reliable, secure fastening with minimal risk of loosening under vibration.
• Easy installation and removal with a 3/16" hex drive and standard socket head profile, reducing assembly time.
• Optimized for heavy-duty use featuring a coarse 1/4"-20 UNRC thread for quick engagement and high load-bearing capacity.
• Compliance with major industry standards including ASME B18.3, NAS1352N4-40, and SAE AMS5731/5737, guaranteeing quality and interoperability.
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting global regulatory requirements.

Professional Applications & Engineering Value

This A286 stainless steel socket head cap screw is engineered to address critical challenges in demanding sectors like aerospace, automotive, and heavy machinery. Its high tensile strength (160,000 psi) and Rockwell C33 hardness provide exceptional resistance to fatigue and deformation under extreme loads. The passivated finish enhances corrosion resistance, making it suitable for environments exposed to moisture and chemicals. Featuring a 1/4-20 coarse thread and Class 3A fit, it ensures rapid, secure fastening in high-vibration settings, reducing maintenance needs. The partially threaded design and 3/16" hex drive allow for precise torque application and easy access in confined spaces, streamlining assembly processes and improving overall structural integrity in critical applications.

Specification Summary & Compliance

This screw adheres to precise dimensional standards with a Class 3A thread fit and UNRC coarse thread profile, ensuring high accuracy and reliability. It is manufactured in compliance with ASME B18.3, NAS1352N4-40, and SAE AMS5731/5737 specifications, covering material and performance requirements. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming its adherence to environmental and safety regulations for industrial use.