S-8077A254 8-32 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction, ideal for harsh industrial environments and extended service life.
• Enhanced durability and wear resistance from the Black Oxide finish, providing a protective layer against abrasion and galling.
• High-strength performance with a 70,000 psi tensile strength and 35,000 psi shear strength, ensuring reliability under heavy loads.
• Precise and secure fit with Class 3A thread tolerance, minimizing backlash and improving assembly accuracy.
• Easy installation and removal using a standard 3/32" hex drive and knurled head for improved grip and torque application.
• Robust shoulder design with precise diameter and length tolerances, providing stable bearing surfaces and accurate component alignment.
• Compliance with global regulations, including RoHS 3 and REACH, ensuring safety and environmental responsibility in your supply chain.

Professional Applications & Engineering Value

This 316 Stainless Steel shoulder screw is engineered to solve critical challenges in precision assembly and motion control systems. The UNC coarse thread and Class 3A fit ensure fast, reliable engagement in metals and plastics, reducing the risk of cross-threading in high-volume production. The black oxide finish on the stainless steel substrate not only enhances corrosion resistance but also reduces friction during installation, preventing seizing in dynamic applications. The precisely machined shoulder acts as a pivot, spacer, or bearing surface in machinery, automotive, and aerospace assemblies, maintaining alignment and absorbing radial loads. Its high tensile and shear strength makes it suitable for heavy-duty industrial use, where failure is not an option.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 3A fit for precise thread engagement. Key dimensional tolerances include a shoulder diameter of 7/32" (tolerance: -0.004" to -0.002") and shoulder length of 13/32" (tolerance: -0.005" to 0.005"). The material meets a hardness of Rockwell B79 and mechanical properties including 70,000 psi tensile strength and 35,000 psi minimum shear strength. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances for safe use in various industries.