S-91273A625 3/8"-16 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
• High load-bearing capacity with 70,000 psi tensile strength and 35,000 psi shear strength for reliable performance under stress
• Precise alignment and smooth rotation enabled by the standard shoulder diameter and length with controlled tolerances
• Secure, non-slip installation thanks to the hex drive and knurled head texture for enhanced grip during tightening
• Easy assembly and disassembly with coarse UNC threads and Class 2A fit, reducing installation time and effort
• Consistent durability backed by Rockwell B55 hardness, ensuring long-term wear resistance
• Global compliance assurance with RoHS 3 and REACH standards, meeting environmental and safety regulations

Professional Applications & Engineering Value

This 3/8"-16 UNC shoulder screw is engineered to address common challenges in precision machinery and assembly lines, where misalignment and component wear can lead to costly downtime. The 18-8 stainless steel material, combined with a black oxide finish, provides excellent corrosion resistance, making it suitable for applications in humid or chemically exposed settings like packaging equipment, automotive jigs, and conveyor systems. The socket head with hex drive and knurled texture ensures secure tool engagement, preventing slippage during high-torque installations. Its standard shoulder acts as a precise pivot or spacer, reducing friction and maintaining alignment in rotating parts, while the coarse thread design allows for quick fastening in industrial shoulder screw applications, enhancing overall efficiency and reliability.

Specification Summary & Compliance

This shoulder screw adheres to inch system measurements with a 3/8"-16 UNC coarse thread and Class 2A thread fit for consistent dimensional accuracy. The shoulder diameter tolerance is -0.004" to -0.002", and shoulder length tolerance is -0.005" to 0.005", ensuring precise fits in assemblies. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for global industrial use without hazardous substances.