S-90337A354 2-56 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and long-term reliability.
• Enhanced durability and strength from 70,000 psi tensile strength and Rockwell B55 hardness, resisting wear and deformation under load.
• Precise component alignment thanks to the exact 3/32" shoulder diameter with tight tolerance, ensuring smooth rotation and reduced vibration.
• Space-saving low-profile socket head with 5/64" hex drive, allowing for installation in confined areas without compromising torque application.
• Reliable thread engagement with Class 2A UNC coarse threads, providing secure fastening and ease of assembly in various materials.
• Extended shoulder length of 5/8" for accurate positioning and support of moving parts in assemblies like gears or pulleys.
• Compliance with environmental standards including RoHS 3 and REACH, ensuring safe use in regulated industries.

Professional Applications & Engineering Value

This 2-56 UNC shoulder screw is engineered to address common industrial challenges such as misalignment and component wear in precision machinery. The 18-8 Stainless Steel material offers excellent corrosion resistance, making it suitable for applications in moist or chemical-exposed environments like medical devices, electronics, and automotive assemblies. The low profile socket head design minimizes protrusion, while the 5/64" hex drive ensures secure tool engagement for efficient installation. With a precise shoulder fit and coarse thread spacing, it provides stable pivoting and alignment in mechanisms requiring minimal backlash, enhancing overall system longevity and performance in demanding industrial shoulder screw applications.

Specification Summary & Compliance

This shoulder screw adheres to Class 2A thread fit for consistent engagement and UNC thread standards in the inch system. Dimensions include a shoulder diameter of 3/32" with a tolerance of -0.001" to 0" and a shoulder length of 5/8" with 0" to 0.002" tolerance, ensuring precise manufacturing. It is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious industries.