S-91054A478 8-32 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh or washdown environments.
• Exceptional surface hardness and wear resistance from the TiCN coating, significantly extending service life.
• Precise component alignment ensured by the smooth, accurately machined 3/16" diameter shoulder with a tight fit tolerance.
• High-strength performance with a 70,000 psi tensile strength and Rockwell B55 hardness for demanding mechanical applications.
• Reliable and consistent fastening provided by the Class 2A fit UNC coarse thread, ensuring easy assembly and vibration resistance.
• Secure, high-torque installation enabled by the socket head with a 3/32" hex drive, preventing cam-out and tool slippage.
• Compliance with global environmental standards (RoHS 3 & REACH), making it suitable for regulated industries and international supply chains.

Professional Applications & Engineering Value

This precision shoulder screw is engineered to solve critical alignment and durability challenges in industrial assemblies. The 18-8 Stainless Steel core provides excellent resistance to rust and corrosion, while the advanced TiCN coating drastically increases surface hardness, reducing galling and wear in high-cycle applications. The 3/16" shoulder length with its precise diameter tolerance acts as a pivot or axle, ensuring perfect alignment of moving parts like gears, linkages, and bearings, which minimizes eccentric loading and premature failure. The combination of a 70000 psi tensile strength and a Class 2A UNC coarse thread delivers a robust fastening solution that withstands vibration and dynamic stresses in machinery, automation systems, and precision instruments.

Specification Summary & Compliance

This shoulder screw features an 8-32 UNC thread with a Class 2A fit for standard industrial compatibility. The shoulder is manufactured to a precise diameter of 3/16" with a tolerance of -0.002" to 0" and a length of 1/4" with a tolerance of 0" to 0.003". The component is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety standards for use in various global markets.