S-8077A744 1/2"-13 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction and black oxide finish, ideal for harsh industrial environments
• Enhanced durability and strength with 70,000 psi tensile strength and 35,000 psi shear strength for heavy-duty applications
• Precise alignment and positioning thanks to the 6" shoulder length with tight tolerances for consistent performance
• Reliable thread engagement with Class 3A UNC coarse threads ensuring secure fastening and vibration resistance
• Easy installation and removal featuring a knurled socket head with 5/16" hex drive for improved grip and torque application
• Compliance with industry standards including ASME B18.3, RoHS 3, and REACH for quality assurance and environmental safety
• Versatile right-hand thread design suitable for various machinery and equipment requiring robust shoulder screws

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw with black oxide finish is engineered to address critical industrial challenges, such as component misalignment and corrosion-induced failure. The 6" shoulder length provides a stable bearing surface for precise part positioning in machinery, robotics, and automotive assemblies, reducing wear and extending equipment life. The UNC coarse thread and Class 3A fit ensure quick assembly and high resistance to loosening under vibration, while the knurled socket head allows for efficient torque application in confined spaces. Ideal for heavy-duty fastening in corrosive environments, this screw delivers reliable performance in applications like conveyor systems, precision instruments, and structural frameworks, minimizing downtime and maintenance costs.

Specification Summary & Compliance

This shoulder screw features a 1/2"-13 UNC thread with Class 3A precision fit for consistent thread engagement. It adheres to ASME B18.3 manufacturing standards, ensuring dimensional accuracy with shoulder diameter tolerance of -0.004" to -0.002" and shoulder length tolerance of -0.005" to 0.005". The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental responsibility for industrial use.