S-92423A150 5/16"-18 x 2 1/4" ASME B18.3, NAS1352N5-36, SAE AMS5731, SAE AMS5737 High-Strength A286 Stainless Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional high-temperature and corrosion resistance thanks to A286 stainless steel construction with passivated finish, ideal for harsh industrial environments.
• Superior tensile strength up to 160,000 PSI ensures reliable performance under extreme mechanical loads, reducing the risk of fastener failure.
• Precision Class 3A thread fit provides tighter tolerances for secure, vibration-resistant assemblies and improved joint integrity.
• High hardness (Rockwell C33) offers excellent wear resistance, extending the service life of the fastener in demanding applications.
• Partially threaded design allows for precise clamping force control and secure fastening in specific assembly configurations.
• Compliance with major industry standards including ASME B18.3, NAS1352N5-36, and SAE AMS5731/5737 guarantees consistent quality and interchangeability.
• Hex socket drive with 1/4" drive size enables easy installation and removal with standard tools, even in confined spaces.

Professional Applications & Engineering Value

This 5/16"-18 A286 Stainless Steel Socket Head Cap Screw is engineered to address critical challenges in high-stress and corrosive environments. Its A286 material grade and passivated finish provide outstanding resistance to oxidation and chemical exposure, making it suitable for aerospace, automotive, and heavy machinery applications where temperature fluctuations and harsh conditions are common. The Class 3A thread fit and UNRC coarse thread design ensure rapid assembly with minimal cross-threading risks, while the partially threaded shank allows for optimal load distribution. With a tensile strength of 160,000 PSI and compliance with ASME B18.3 and other rigorous standards, this fastener delivers reliable performance in critical assemblies, reducing maintenance needs and enhancing operational safety.

Specification Summary & Compliance

This socket head cap screw features a Class 3A thread fit with UNRC coarse threads (5/16"-18), ensuring precise dimensional accuracy and secure fastening. It meets ASME B18.3, NAS1352N5-36, and SAE AMS5731/5737 specifications for manufacturing consistency. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for global industrial use.