S-8077A853 10-24 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and chemical exposure.
• Enhanced durability and wear resistance from the black oxide finish, which also provides a sleek, non-reflective surface.
• High-strength performance with 70,000 psi tensile and 35,000 psi shear strength, ensuring reliable load-bearing in demanding applications.
• Precise alignment and secure pivoting due to the knurled head and accurately machined shoulder with tight diameter and length tolerances.
• Easy installation and removal with the standard hex socket (5/32" drive), allowing for high torque application without slippage.
• Consistent and reliable thread engagement from the Class 3A UNC coarse thread, reducing the risk of cross-threading and ensuring a secure fit.
• Compliance with major industry standards including ASME B18.3, RoHS 3, and REACH, guaranteeing safety and environmental responsibility.

Professional Applications & Engineering Value

This 10-24 UNC shoulder screw is engineered to address critical challenges in precision assembly and motion control systems. The 316 stainless steel material offers exceptional resistance to corrosion and oxidation, making it suitable for marine, chemical processing, and food-grade equipment where moisture and aggressive substances are present. The black oxide finish not only enhances the aesthetic but also adds a protective layer against wear and galling. The knurled head provides improved grip during manual adjustments, while the precisely machined shoulder acts as a pivot, bearing surface, or locator in machinery, reducing wear on connected components and maintaining alignment under dynamic loads. Its Class 3A thread fit and coarse UNC thread ensure quick assembly and high vibration resistance, which is vital in automotive, aerospace, and heavy machinery applications where reliability and ease of maintenance are paramount.

Specification Summary & Compliance

This shoulder screw adheres to ASME B18.3 specifications, with a Class 3A thread fit for superior thread engagement and a coarse UNC thread (10-24) for robust performance. The shoulder features precise tolerances: diameter of 5/16" (-0.004" to -0.002") and length of 3/8" (-0.005" to 0.005"), ensuring consistent fit in assemblies. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in various industrial and consumer products without hazardous substances.