S-97768A354 5/16"-24 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and black oxide finish, ideal for harsh industrial environments
• Precise alignment and smooth rotation ensured by the 3/8" shoulder with tight diameter tolerance for reduced wear
• High-strength performance with 70,000 psi tensile and 35,000 psi shear strength for demanding applications
• Secure, non-slip installation thanks to the knurled socket head and hex drive design
• Reliable fine-thread engagement with Class 3A UNF thread fit for vibration resistance and accurate torque control
• Industry-standard compliance meeting ASME B18.3 specifications for consistent quality and interchangeability
• Environmental regulation adherence with RoHS 3 and REACH compliance for safe, sustainable use

Professional Applications & Engineering Value

This 5/16"-24 UNF shoulder screw is engineered to address critical alignment and durability challenges in precision assemblies. The 18-8 stainless steel material, enhanced with a black oxide finish, provides excellent corrosion resistance, reducing maintenance in humid or chemically exposed settings. The 3/8" shoulder length acts as a precise pivot or spacer, minimizing misalignment in machinery, automotive, and electronics applications. Combined with the Class 3A thread fit and knurled socket head, it ensures vibration-resistant fastening and easy installation with standard hex tools, enhancing assembly efficiency and product lifespan.

Specification Summary & Compliance

This shoulder screw features a 5/16"-24 UNF fine thread with Class 3A fit for high precision. The shoulder diameter tolerance is -0.004" to -0.002", and shoulder length tolerance is -0.005" to 0.005", ensuring exact dimensional control. It complies with ASME B18.3 standards, RoHS 3 (2015/863/EU), and REACH (EC 1907/2006) regulations, guaranteeing consistent performance and environmental safety.