S-8077A158 2-56 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and extended service life.
• Enhanced durability and wear resistance from the Black Oxide finish, providing a protective layer against abrasion.
• High-strength performance with 70,000 psi tensile and 35,000 psi shear strength, ensuring reliable load-bearing in demanding applications.
• Precise thread engagement with Class 3A fit and UNC coarse threading for secure, vibration-resistant fastening.
• Easy installation and grip thanks to the knurled socket head and standard hex drive, allowing for efficient assembly with common tools.
• Accurate alignment and spacing provided by the precisely machined shoulder, maintaining component positioning in mechanical assemblies.
• Compliance with environmental standards, including RoHS 3 and REACH, ensuring safe and sustainable use in global markets.

Professional Applications & Engineering Value

This 316 Stainless Steel Shoulder Screw with a Black Oxide finish is engineered to address common industrial challenges such as corrosion, misalignment, and mechanical stress. The UNC coarse thread and Class 3A thread fit ensure quick assembly and high resistance to loosening under vibration, making it ideal for precision machinery, automotive components, and electronic enclosures. The knurled socket head enhances grip during installation, reducing tool slippage and improving workflow efficiency. With its robust tensile strength of 70,000 psi and excellent corrosion resistance, this shoulder screw provides long-term reliability in demanding environments, from marine to chemical processing applications, while maintaining dimensional accuracy for consistent performance.

Specification Summary & Compliance

This shoulder screw features a 2-56 UNC thread with Class 3A fit for precise tolerance, ensuring secure fastening. Key dimensions include a shoulder diameter of 3/32" with a tolerance of -0.004" to -0.002" and a shoulder length of 7/16" with a tolerance of -0.005" to 0.005". It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for industrial use.