S-91273A691 5/8"-11 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction and Black Oxide finish, ideal for harsh industrial environments.
• Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable performance in heavy-duty applications.
• Precise alignment and smooth rotation due to the standard shoulder fit and knurled head texture, reducing assembly time and wear.
• Easy installation and high torque capability with a 5/16" hex socket drive, ensuring secure fastening without stripping.
• Accurate thread engagement with UNC coarse threads and Class 2A fit, providing consistent clamping force and vibration resistance.
• Durable and long-lasting with Rockwell B55 hardness, maintaining integrity under repeated stress and load.
• Compliance with global standards including RoHS 3 and REACH, ensuring safety and environmental responsibility for B2B procurement.

Professional Applications & Engineering Value

This 5/8"-11 UNC shoulder screw is engineered to address critical challenges in precision machinery and industrial assemblies. The 18-8 Stainless Steel material, combined with a Black Oxide finish, provides excellent resistance to corrosion and oxidation, extending service life in demanding conditions like automotive, aerospace, and manufacturing equipment. The socket head design with a 5/16" hex drive allows for easy access in confined spaces, while the knurled texture enhances grip during manual adjustments. Its coarse UNC threads and Class 2A fit ensure quick assembly and reliable performance in high-vibration environments, reducing maintenance downtime and improving operational efficiency for engineers and procurement specialists.

Specification Summary & Compliance

This shoulder screw features precise dimensions, including a thread size of 5/8"-11 UNC with Class 2A thread fit for consistent tolerance. The shoulder diameter is 5/8" with a tolerance of -0.004" to -0.002", and shoulder length is 1 1/2" with a tolerance of -0.005" to 0.005", ensuring accurate alignment. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and safety standards for industrial fasteners.