S-91273A697 5/8"-11 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments.
• Enhanced durability and reduced galling thanks to the black oxide finish, extending service life.
• High-strength performance with 70,000 psi tensile and 35,000 psi shear strength for demanding loads.
• Secure, non-slip installation provided by the knurled head and 5/16" hex socket drive.
• Precision alignment and smooth rotation ensured by the standard shoulder fit and Class 2A thread tolerance.
• Versatile coarse threading (UNC) for faster assembly and reliable holding power in various materials.
• Compliance with global environmental standards including RoHS 3 and REACH for responsible sourcing.

Professional Applications & Engineering Value

This 5/8"-11 UNC shoulder screw is engineered to address critical challenges in industrial machinery, automotive assemblies, and precision manufacturing equipment. The 18-8 stainless steel core provides excellent resistance to rust and chemical exposure, while the black oxide finish adds an extra layer of protection against wear and reduces friction during operation. The knurled head and hex socket drive ensure a secure grip, preventing tool slippage and enabling high-torque installation. The precision-machined shoulder acts as a reliable bearing surface or pivot point, maintaining alignment and reducing wear on mating components. With its coarse UNC thread and robust construction, this screw delivers consistent performance in high-vibration and heavy-load scenarios, minimizing downtime and maintenance costs.

Specification Summary & Compliance

This shoulder screw adheres to Class 2A thread fit tolerances for consistent engagement and assembly. The UNC thread form and specified dimensions, including a shoulder diameter tolerance of -0.004" to -0.002", ensure precise integration. It is manufactured to deliver 70,000 psi tensile strength and 35,000 psi minimum shear strength, backed by a Rockwell B55 hardness. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting stringent environmental and safety standards for industrial use.