S-91829A211 8-32 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel and passivated finish, ideal for harsh environments.
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for heavy-duty applications.
• Precise alignment and reduced wear due to the smooth, precisely machined shoulder with tight diameter and length tolerances.
• Reliable and easy assembly with a standard socket head and slotted drive for secure torque application.
• Wide compatibility and secure fastening with 8-32 UNC coarse right-hand threads and Class 2A fit.
• Regulatory compliance assurance by meeting RoHS 3 and REACH standards for global market access.
• Optimized for precision machinery with a 1-1/2" shoulder length providing stable bearing surfaces.

Professional Applications & Engineering Value

This 18-8 Stainless Steel Shoulder Screw is engineered to address critical challenges in precision assembly and rotating mechanisms. Its passivated finish enhances corrosion resistance, making it suitable for applications in moist or chemically aggressive environments, such as industrial machinery, automotive systems, and electronic enclosures. The UNC coarse thread and Class 2A thread fit ensure quick, reliable fastening with minimal risk of cross-threading, while the precisely toleranced shoulder (diameter: 3/16", length: 1-1/2") provides a stable pivot or locating surface, reducing wear and misalignment in moving parts. With a tensile strength of 70,000 psi and Rockwell B55 hardness, it offers durability under dynamic loads, ensuring long-term performance in heavy-duty applications like linkages, gears, and custom jigs.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with an 8-32 thread size and Class 2A thread fit for precise dimensional accuracy. The shoulder features a diameter of 3/16" (tolerance: -0.001" to 0") and length of 1-1/2" (tolerance: 0" to 0.002"), ensuring consistent performance. It is manufactured from 18-8 Stainless Steel with a passivated finish and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for restricted substance-controlled industries.