S-91273A713 3/4"-10 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and reducing maintenance costs.
• High mechanical strength and durability with a tensile strength of 70,000 psi and shear strength of 35,000 psi for reliable performance under heavy loads.
• Secure and non-slip installation provided by the knurled socket head and 3/8" hex drive, minimizing tool slippage and ensuring precise assembly.
• Precision alignment and smooth rotation due to the standard shoulder fit and Class 2A thread fit, reducing wear and extending component life.
• Enhanced wear resistance and reduced galling from the black oxide finish, which also provides a sleek, non-reflective surface.
• Broad compatibility and easy sourcing with UNC coarse threads and right-hand direction, fitting standard industrial equipment and tooling.
• Compliance with strict environmental regulations including RoHS 3 and REACH, ensuring safe use in global markets and sensitive applications.

Professional Applications & Engineering Value

This 3/4"-10 UNC shoulder screw is engineered to address critical alignment and high-stress challenges in industrial machinery. The 18-8 stainless steel material offers excellent resistance to rust and oxidation, making it suitable for applications in chemical processing, food machinery, and outdoor equipment where moisture is a concern. The black oxide finish not only enhances corrosion protection but also reduces friction during assembly, preventing seizing. The knurled socket head with a 3/8" hex drive ensures a firm grip, allowing for high-torque installation without stripping. With a shoulder diameter of 3/4" and precise tolerances, it provides a stable pivot point for gears, pulleys, and linkages, minimizing misalignment and vibration in heavy-duty industrial applications. This design delivers long-term reliability, reducing downtime and maintenance costs in automated systems and precision assemblies.

Specification Summary & Compliance

This shoulder screw features a Class 2A thread fit with UNC coarse threads and a right-hand direction, ensuring consistent engagement and ease of assembly. The shoulder diameter tolerance is -0.004" to -0.002", and the shoulder length tolerance is -0.005" to 0.005", providing high dimensional accuracy for precise fits. Manufactured to industry standards, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious and global industrial use.