S-97832A385 8-32 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction, ensuring long-term reliability in harsh environments.
• Precise component alignment due to the 1-1/2" shoulder with tight length tolerance (±0.005"), reducing assembly errors and improving machine performance.
• Superior load-bearing capacity with 70,000 psi tensile strength and 35,000 psi minimum shear strength, ideal for high-stress applications.
• Secure and efficient installation enabled by the hex drive and knurled head, preventing tool slippage and speeding up assembly processes.
• Reliable thread engagement with Class 3A thread fit and coarse UNC threads, minimizing the risk of cross-threading and ensuring consistent fastening.
• Enhanced durability from Rockwell B55 hardness, offering excellent wear resistance for repeated use in industrial settings.
• Compliance with global standards including RoHS 3 and REACH, making it suitable for regulated industries and export markets.

Professional Applications & Engineering Value

This 8-32 UNC shoulder screw is engineered to address critical alignment and strength challenges in industrial machinery, automation systems, and precision equipment. The 18-8 stainless steel material provides excellent corrosion resistance, essential for operations in moist or chemically aggressive environments. The 1-1/2" shoulder length with tight tolerances ensures accurate positioning of moving parts like gears, pulleys, and bearings, reducing vibration and wear. Combined with Class 3A thread fit and coarse UNC threads, it offers quick assembly and high clamping force, making it ideal for heavy-duty applications where reliability is paramount. The knurled head and hex drive design further enhance installation efficiency, minimizing downtime in production lines.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 3A thread fit for precise engagement. Shoulder diameter tolerance is -0.004" to -0.002", and shoulder length tolerance is -0.005" to 0.005", ensuring high dimensional accuracy. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, supporting use in environmentally conscious and regulated industries.