S-91273A676 1/2"-13 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments.
• Enhanced durability and wear resistance from the Black Oxide finish, reducing maintenance needs.
• High tensile strength of 70,000 PSI and shear strength of 35,000 PSI for reliable performance under heavy loads.
• Precise alignment and smooth rotation with a knurled head and standard shoulder fit, minimizing component wear.
• Easy installation and removal using a 1/4" hex drive socket head, saving time in assembly.
• Accurate thread engagement with Class 2A UNC coarse threads, ensuring secure fastening in various materials.
• Compliance with RoHS 3 and REACH regulations for safe, environmentally responsible use in global markets.

Professional Applications & Engineering Value

This shoulder screw is engineered to address common industrial challenges, such as misalignment and component fatigue in machinery. Made from 18-8 Stainless Steel with a Black Oxide finish, it resists corrosion and extends service life in demanding settings like automotive assemblies or precision equipment. The 4-inch shoulder length provides stable pivoting or spacing, while the UNC coarse threads and Class 2A fit ensure quick, reliable fastening. With a Rockwell B55 hardness and high strength ratings, it minimizes failure risks, making it a trusted choice for industrial and mechanical applications requiring durability and precision.

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 -0.004" to -0.002" and length tolerance of -0.005" to 0.005". It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability in industrial use.