S-90337A186 8-32 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish for extended service life in harsh environments.
• Precise component alignment ensured by the smooth, precisely toleranced shoulder diameter and length for reliable assembly.
• Space-saving low-profile socket head allows for installation in tight spaces while providing a secure hex drive.
• High-strength performance with 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications.
• Reliable and coarse UNC thread with Class 2A fit ensures easy assembly and consistent clamping force.
• Environmental compliance with RoHS 3 and REACH regulations for safe use in regulated industries.
• Optimized shoulder-to-thread ratio with a 1/2" shoulder and 3/16" thread for versatile mounting and pivoting functions.

Professional Applications & Engineering Value

This 8-32 UNC shoulder screw is engineered to address critical alignment and pivot point challenges in industrial machinery, automation systems, and precision instruments. The 18-8 stainless steel material, enhanced by a passivated finish, provides excellent resistance to rust and chemical exposure, making it ideal for washdown environments or outdoor applications. The low profile socket head design minimizes protrusion, reducing the risk of snagging while allowing high torque application with a standard hex key. The precise shoulder diameter and length act as a reliable datum for locating parts, eliminating misalignment in rotating assemblies or as a pivot in linkages. This combination of corrosion resistance, high tensile strength, and exact dimensional control ensures reduced maintenance, longer component life, and consistent performance in industrial shoulder screw applications.

Specification Summary & Compliance

This shoulder screw adheres to UNC coarse thread standards with a Class 2A thread fit for consistent engagement. The shoulder features a precise diameter tolerance of -0.001" to 0" and a length tolerance of 0" to 0.002" for accurate positioning. Manufactured from 18-8 stainless steel with a passivated finish, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for global industrial use.