S-94035A226 1/4"-20 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments.
• Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B55 hardness for reliable, long-term performance under load.
• Precise component alignment enabled by the smooth, accurately machined shoulder with minimal diameter and length tolerances.
• Easy installation and high torque transmission via the 5/32" hex socket drive, reducing tool slippage and assembly time.
• Wide compatibility and secure fastening with 1/4"-20 UNC coarse threads and Class 2A fit, ensuring consistent engagement in various materials.
• Compliance with environmental regulations including RoHS 3 and REACH, making it suitable for global supply chains and sensitive applications.

Professional Applications & Engineering Value

This stainless steel shoulder screw is engineered to address critical alignment and durability challenges in industrial applications. The 2-1/2" shoulder length provides a stable, precise pivot or bearing surface, minimizing wear in machinery assemblies, while the UNC coarse thread and Class 2A fit ensure quick, secure fastening even in vibrating environments. Made from 18-8 stainless steel with a passivated finish, it resists corrosion and oxidation, extending service life in automotive, aerospace, and manufacturing equipment. The hex socket head allows for compact design and efficient installation, reducing maintenance downtime and improving overall system reliability.

Specification Summary & Compliance

This shoulder screw features a 1/4"-20 UNC thread with Class 2A tolerance for consistent fit, a shoulder diameter of 5/16" with tight tolerance, and a shoulder length of 2-1/2" with minimal variation. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets environmental and safety standards for industrial use.