S-8077A851 10-24 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and chemical exposure
• Enhanced durability and wear resistance from the black oxide finish, providing long-lasting performance and reduced maintenance
• Precise component alignment and smooth rotation thanks to the knurled head and precisely machined shoulder with tight diameter tolerance
• High-strength fastening for demanding applications with 70,000 psi tensile strength and 35,000 psi minimum shear strength
• Reliable, coarse-thread engagement using UNC 10-24 threads with Class 3A fit for quick assembly and vibration resistance
• Secure, high-torque installation enabled by the hex socket drive, preventing cam-out and ensuring consistent clamping force
• Full compliance with industry standards including ASME B18.3, RoHS 3, and REACH for guaranteed quality and environmental safety

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw with a black oxide finish is engineered to solve critical alignment and corrosion challenges in industrial machinery. The precision-machined shoulder provides an exact pivot point or bearing surface, eliminating misalignment in assemblies and reducing wear on moving parts. Its UNC coarse threading ensures rapid installation and superior resistance to loosening under vibration, making it ideal for high-stress applications like conveyor systems, robotic arms, and precision instruments. The combination of high tensile and shear strength with excellent corrosion resistance from the 316 material ensures long-term reliability in demanding environments, from marine equipment to chemical processing plants, while the hex socket drive allows for efficient installation in confined spaces.

Specification Summary & Compliance

This shoulder screw features a 10-24 UNC thread with Class 3A fit for precise, coarse-thread engagement, a shoulder diameter of 5/16" with a tight tolerance of -0.004" to -0.002", and a shoulder length of 1/8" with a tolerance of -0.005" to 0.005". It is manufactured to meet ASME B18.3 specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to strict quality and environmental standards for industrial use.