S-94035A125 2-56 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.
• High tensile strength of 70,000 psi provides dependable load-bearing capacity and reduces the risk of mechanical failure in demanding applications.
• Precise shoulder fit with tight tolerances enables accurate alignment and smooth rotation in assemblies, minimizing wear and vibration.
• Rockwell B55 hardness offers excellent durability and resistance to deformation under stress, extending service life.
• Class 2A thread fit with UNC coarse threading ensures easy installation and secure fastening, reducing assembly time and improving efficiency.
• Socket head with 5/64" hex drive allows for compact, high-torque installation in confined spaces, enhancing versatility.
• Compliance with RoHS 3 and REACH regulations guarantees environmental safety and meets international standards for industrial use.

Professional Applications & Engineering Value

This 2-56 UNC shoulder screw is engineered to address critical alignment and durability challenges in precision machinery and assemblies. The 1-inch shoulder with precise fit tolerance serves as a reliable pivot or spacer, reducing friction and misalignment in rotating components like bearings, gears, and linkages. Made from 18-8 stainless steel with a passivated finish, it resists corrosion from moisture, chemicals, and industrial atmospheres, making it ideal for automotive, aerospace, and electronic equipment. The coarse UNC threads and Class 2A fit facilitate quick, secure fastening, while the socket head design supports high-torque applications in tight spaces, streamlining maintenance and improving overall assembly integrity.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy. Key specifications include a shoulder diameter tolerance of -0.001" to 0" and shoulder length tolerance of 0" to 0.002", ensuring precise assembly. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, affirming its suitability for global industrial use without hazardous substances.