S-94035A302 1/4"-20 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 stainless steel construction and passivated finish, ensuring long-term reliability in harsh environments
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for high-stress applications
• Precise alignment and positioning enabled by the 5/16" shoulder diameter with tight tolerances for stable component mounting
• Reliable thread engagement with Class 2A UNC coarse threads providing secure fastening and easy assembly
• Secure installation and removal using the hex socket head design, allowing high torque application without stripping
• Broad industrial compliance meeting RoHS 3 and REACH environmental regulations for global manufacturing use
• Optimized for repeated use with smooth head texture and standard socket profile ensuring consistent performance

Professional Applications & Engineering Value

This 1/4-20 UNC shoulder screw delivers critical engineering value in applications requiring precise component alignment and rotational control. The 5/16" shoulder diameter with precise tolerances provides a stable bearing surface that prevents lateral movement in pulleys, gears, and linkages. Manufactured from 18-8 stainless steel with a passivated finish, it resists corrosion in demanding environments including manufacturing equipment, automotive assemblies, and outdoor machinery. The hex socket head design allows for high-torque installation in confined spaces, while the Class 2A thread fit ensures consistent engagement without binding. These precision shoulder screws solve common alignment challenges in rotating mechanisms, reducing wear and maintaining operational accuracy across thousands of cycles.

Specification Summary & Compliance

This shoulder screw features 1/4"-20 UNC coarse threads with Class 2A thread fit for standard industrial applications. The 5/16" shoulder diameter maintains tight tolerances (-0.001" to 0") with shoulder length tolerance of 0" to 0.002" for precise positioning. Manufactured to industry standards using 18-8 stainless steel with passivated finish, the fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations.