S-94035A124 2-56 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 stainless steel and passivated finish, ideal for harsh environments and extended service life.
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness, ensuring reliable performance under high stress.
• Precise alignment and spacing enabled by the 3/4" shoulder with tight diameter and length tolerances, reducing assembly errors.
• Secure and efficient installation with a 5/64" hex socket drive, providing a firm grip and reducing the risk of tool slippage.
• Wide compatibility and reliable fastening due to the 2-56 UNC coarse thread with Class 2A fit, ensuring consistent engagement.
• Compliance with global environmental standards including RoHS 3 and REACH, making it suitable for regulated industries.
• Durable and smooth operation from the right-hand thread and smooth head texture, minimizing wear during use.

Professional Applications & Engineering Value

This precision shoulder screw is engineered to address critical challenges in mechanical assemblies requiring exact component positioning and robust fastening. The 18-8 stainless steel construction, enhanced by a passivated finish, provides excellent resistance to corrosion and oxidation, making it ideal for applications in electronics, automotive, and aerospace where environmental factors are a concern. The 3/4" shoulder length with precise tolerances ensures accurate alignment of parts such as gears, pulleys, and linkages, reducing vibration and wear. The socket head design with a 5/64" hex drive allows for easy installation in confined spaces, while the 2-56 UNC coarse thread offers quick assembly and high holding power. This screw is a reliable solution for industrial fasteners that demand durability, precision, and compliance with stringent standards.

Specification Summary & Compliance

This shoulder screw adheres to Class 2A thread fit for consistent engagement and features a shoulder diameter of 3/32" with a tolerance of -0.001" to 0", and a shoulder length of 3/4" with a tolerance of 0" to 0.002" for precise applications. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global markets. The UNC thread standard and coarse spacing further support reliable performance in various mechanical systems.