S-8077A237 8-32 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction and Black Oxide finish, ideal for harsh or humid environments.
• Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for high-stress, demanding applications.
• Precise and reliable assembly ensured by the Class 3A thread fit and UNC coarse threading, reducing the risk of cross-threading.
• Secure, non-slip installation with a knurled socket head and 3/32" hex drive, allowing for high torque application without tool slippage.
• Accurate component alignment due to the precisely toleranced shoulder diameter and length, providing a stable pivot or bearing surface.
• Compliance with global standards including RoHS 3 and REACH, ensuring safety and environmental responsibility for industrial use.
• Durable and long-lasting performance from a Rockwell B79 hardness rating, maintaining integrity under repeated use.

Professional Applications & Engineering Value

This 316 Stainless Steel shoulder screw is engineered to solve critical challenges in mechanical assemblies requiring precise alignment and high load-bearing capacity. The Black Oxide finish enhances corrosion resistance, making it suitable for applications in marine, chemical processing, and outdoor equipment where moisture and corrosive agents are present. The UNC coarse thread with Class 3A fit ensures quick, secure fastening in materials like metals and plastics, reducing installation time and preventing thread stripping. The knurled socket head and hex drive design provide a firm grip for high-torque applications, minimizing the risk of cam-out. Commonly used in pivots, linkages, and rotating machinery, this shoulder screw offers a reliable, unthreaded shoulder section that acts as a dowel, bearing, or axle, eliminating the need for additional components and simplifying design while maintaining high tensile and shear strength.

Specification Summary & Compliance

This shoulder screw adheres to precise dimensional standards, including a Class 3A thread fit for tight tolerances and a UNC coarse thread profile. The shoulder diameter and length are manufactured to tight tolerances (e.g., shoulder diameter: -0.004" to -0.002") to ensure consistent performance in precision assemblies. It conforms to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its compliance with environmental and safety standards for industrial fasteners.