S-8077A878 3/4"-10 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 under demanding conditions
• High load-bearing capacity with 70,000 psi tensile strength and 35,000 psi shear strength for reliable operation in heavy-duty applications
• Precise thread engagement with Class 3A fit and UNC coarse threads, ensuring secure fastening and vibration resistance
• Easy installation and removal thanks to the 1/2" hex drive and knurled head design, improving assembly efficiency
• Accurate component alignment with a 3 1/2" shoulder length and controlled tolerances, reducing misalignment issues
• Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and regulatory adherence

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw is engineered to address critical challenges in industrial machinery, automation, and precision equipment. The Black Oxide finish enhances corrosion resistance, making it suitable for environments with moisture or chemicals, while the UNC coarse threads and Class 3A thread fit provide reliable fastening that resists loosening under vibration. The knurled head and hex drive facilitate quick assembly, reducing downtime in production lines. With a 70,000 psi tensile strength and precise shoulder diameter tolerances, it ensures stable alignment in rotating components like pulleys, gears, and linkages, minimizing wear and improving operational lifespan in industrial applications.

Specification Summary & Compliance

This shoulder screw features a 3/4"-10 UNC thread with Class 3A fit for high precision, and dimensional tolerances include shoulder diameter (-0.004" to -0.002") and length (-0.005" to 0.005"). It meets ASME B18.3 specifications for consistency and reliability, and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions are adhered to in industrial use.