S-91273A143 10-32 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and extended service life.
• Precise alignment and smooth rotation ensured by the 3/16" diameter shoulder with controlled tolerances, reducing wear on mating parts.
• High-strength performance with a tensile strength of 70,000 psi and shear strength of 35,000 psi for reliable load-bearing in demanding applications.
• Secure, high-torque installation enabled by the hex socket drive and 3/32" drive size, minimizing cam-out and tool slippage.
• Enhanced manual grip provided by the knurled head texture, facilitating handling and initial positioning during assembly.
• Consistent thread engagement with a Class 2A fit and 10-32 UNF fine thread, offering vibration resistance and secure fastening.
• Compliance with global environmental standards including RoHS 3 and REACH, ensuring safety and regulatory acceptance for international projects.

Professional Applications & Engineering Value

This 10-32 UNF shoulder screw is engineered to address critical alignment and pivot point requirements in machinery and assemblies. The 18-8 stainless steel material provides excellent resistance to rust and corrosion, making it suitable for applications in moist or chemically aggressive environments, such as food processing equipment, marine hardware, and outdoor instrumentation. The 3/16" shoulder diameter and precise length tolerance ensure a snug fit within bushings or bearings, reducing lateral movement and preventing premature wear. The hex socket head allows for high-torque installation in confined spaces, while the fine thread spacing enhances vibration resistance in dynamic systems like motors and conveyor systems. This combination of durable materials and precision engineering delivers reliable performance, minimizing maintenance downtime and improving operational efficiency in industrial settings.

Specification Summary & Compliance

This shoulder screw features a 10-32 UNF thread with a Class 2A fit for standard tolerance and reliable engagement. The shoulder diameter is 3/16" with a tolerance of -0.004" to -0.002", and the shoulder length is 1/2" with a tolerance of -0.005" to 0.005", ensuring precise dimensional control. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for hazardous substance restrictions.