S-97832A172 10-32 ASME B18.3 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 component alignment and pivot points enabled by the 2-1/2" shoulder with controlled diameter tolerance for reliable assembly fit.
• High-strength performance under load with 70,000 psi tensile strength and 35,000 psi shear strength, ensuring joint integrity in demanding applications.
• Secure, high-precision threading with a Class 3A fit 10-32 UNF fine thread, providing excellent vibration resistance and reduced risk of loosening.
• Easy installation and removal using a standard 1/8" hex drive and knurled socket head, allowing for high torque application without slippage.
• Guaranteed dimensional consistency and interchangeability by conforming to the ASME B18.3 standard.
• Environmentally compliant manufacturing meeting RoHS 3 and REACH standards, ensuring safety and regulatory acceptance for global markets.

Professional Applications & Engineering Value

This stainless steel shoulder screw is engineered to address critical alignment and pivot requirements in machinery and assemblies. The 2-1/2" shoulder length acts as a precise spacer or axle, eliminating the need for additional bushings and reducing component count. Manufactured from 18-8 Stainless Steel with a Rockwell B55 hardness, it offers excellent resistance to corrosion and wear, making it suitable for food processing, packaging equipment, and automotive fixtures. The 10-32 UNF fine thread with a Class 3A fit ensures a tight, secure fastening in tapped holes, crucial for applications subject to vibration. The hex socket drive and knurled head provide a non-slip grip, facilitating installation in confined spaces and ensuring reliable performance in high-stress industrial environments.

Specification Summary & Compliance

This shoulder screw features a 10-32 UNF fine thread with a Class 3A thread fit for precision engagement. The shoulder diameter tolerance is -0.004" to -0.002", and the shoulder length tolerance is -0.005" to 0.005", ensuring consistent dimensional accuracy. It is manufactured in compliance with the ASME B18.3 specification and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, confirming its suitability for use in regulated and sensitive applications.