S-94361A322 10-32 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional Durability & Strength: Crafted from high-strength alloy steel with a Rockwell C32 hardness and 140,000 psi tensile strength for reliable performance in demanding applications.
• Superior Corrosion Resistance: The black oxide finish provides a protective layer, significantly enhancing the screw's resistance to rust and wear in harsh industrial environments.
• Precision Fit for Vibration Resistance: The Class 3A thread fit ensures tighter tolerances and a more secure assembly, minimizing the risk of loosening under dynamic loads.
• Secure and Easy Installation: The socket head with a 1/8" hex drive and knurled texture allows for high-torque application and a secure grip, preventing tool slippage.
• Accurate Component Alignment: The precision-ground 1/4" shoulder diameter and 1-3/4" shoulder length with tight tolerances act as a pivot or spacer for precise location of parts.
• Fine Threading for Enhanced Clamping: The 10-32 UNF fine thread offers a greater number of threads per inch, resulting in improved adjustment precision and superior clamping force.
• Global Compliance for Unrestricted Use: Manufactured to be RoHS 3 and REACH compliant, ensuring they meet international environmental and safety regulations.

Professional Applications & Engineering Value

This 10-32 UNF Thread Alloy Steel Shoulder Screw is engineered to solve critical alignment and durability challenges in industrial machinery. The high-strength alloy steel core, combined with the black oxide finish, provides the necessary resilience against high-stress and corrosive environments, preventing premature failure. The Class 3A fit on the UNF fine thread ensures a vibration-resistant connection, which is vital for assemblies in automation equipment, precision instruments, and rotating mechanisms. The precisely machined shoulder acts as a built-in dowel, eliminating the need for additional locating components and streamlining the assembly of gears, linkages, and bearings. This design directly addresses the engineering need for robust, reliable, and precisely located fastening in industrial applications.

Specification Summary & Compliance

This shoulder screw adheres to the UNF (Unified National Fine) thread standard with a precision Class 3A fit for superior thread engagement. The shoulder diameter is held to a tight tolerance of -0.004" to -0.002" and the shoulder length to -0.005" to 0.005". The product is manufactured in compliance with RoHS 3 (2015/863/EU) with exemption 6(a) and is REACH (EC 1907/2006) compliant, affirming its suitability for global markets and environmentally conscious manufacturing processes.