S-91273A196 5/16"-24 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
• High mechanical strength offering 70,000 psi tensile strength and 35,000 psi minimum shear strength for demanding applications.
• Precision alignment and smooth rotation ensured by the 1-1/4" shoulder with controlled diameter and length tolerances.
• Secure and efficient installation via the hex socket drive and knurled head, preventing tool slippage.
• Reliable fine-thread engagement with 5/16"-24 UNF Class 2A threads for vibration resistance and precise clamping.
• Consistent performance and durability backed by Rockwell B55 hardness, maintaining integrity under load.
• Environmental and regulatory compliance meeting RoHS 3 and REACH standards for safe, global use.

Professional Applications & Engineering Value

This 18-8 stainless steel shoulder screw is engineered to address critical assembly challenges in precision machinery, automotive, and industrial equipment. The 1-1/4" shoulder length provides a precise pivot or bearing surface, eliminating misalignment and reducing wear on moving parts. Its 5/16"-24 UNF fine thread ensures secure fastening in high-vibration environments, while the hex socket drive and knurled head facilitate easy installation in confined spaces. Made from corrosion-resistant material, it withstands exposure to moisture and chemicals, making it a reliable industrial fastener for long-term performance and reduced maintenance cycles.

Specification Summary & Compliance

This shoulder screw features 5/16"-24 UNF fine threads with a Class 2A thread fit for standard tolerance. The shoulder diameter is 5/16" with a tolerance of -0.004" to -0.002", and the shoulder length is 1-1/4" with a tolerance of -0.005" to 0.005". It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions are met.