S-8077A765 1/2"-13 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction, ideal for harsh chemical and marine environments.
• Enhanced durability and wear resistance from the Black Oxide finish, providing a protective layer against abrasion.
• High mechanical strength with 70,000 psi tensile and 35,000 psi shear strength, ensuring reliable performance under heavy loads.
• Precise alignment and reduced wear due to the knurled head and standard shoulder fit, facilitating accurate component positioning.
• Easy installation and removal with a 5/16" hex drive socket head, allowing for high torque application without slippage.
• Secure and reliable thread engagement from the 1/2"-13 UNC coarse thread with Class 3A fit, minimizing the risk of cross-threading.
• Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and environmental responsibility.

Professional Applications & Engineering Value

This 316 Stainless Steel shoulder screw with a Black Oxide finish is engineered to address critical challenges in industrial settings, such as corrosion, misalignment, and mechanical stress. Its 1/2"-13 UNC coarse thread and Class 3A thread fit provide robust fastening in high-vibration applications, reducing the likelihood of loosening. The knurled head enhances grip during assembly, while the precise shoulder diameter and length ensure accurate alignment in machinery, automotive, and aerospace components. This design minimizes wear on mating parts, extends service life, and supports efficient maintenance in demanding environments, making it a reliable choice for industrial fasteners requiring high tensile and shear strength.

Specification Summary & Compliance

This shoulder screw adheres to tight dimensional tolerances, including a shoulder diameter tolerance of -0.004" to -0.002" and length tolerance of -0.005" to 0.005", with a Class 3A thread fit for precision. It conforms to ASME B18.3 standards and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and reliability in industrial applications.