S-97832A171 10-32 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
• Precise alignment and pivot function ensured by the 2" shoulder with tight length tolerance for consistent assembly performance.
• Superior thread engagement and load distribution from the Class 3A fine UNF thread fit, minimizing the risk of stripping.
• High mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness to withstand demanding operational stresses.
• Secure and easy installation using the hex socket drive and knurled head, providing excellent grip and torque transmission.
• Broad regulatory compliance including ASME B18.3, RoHS 3, and REACH, ensuring safety and environmental standards are met.
• Reliable shear resistance with a minimum shear strength of 35,000 psi for enhanced joint integrity in dynamic applications.

Professional Applications & Engineering Value

This 18-8 stainless steel shoulder screw is engineered to address critical alignment and rotational needs in industrial assemblies. The 2" precision shoulder acts as a dependable pivot or spacer, eliminating misalignment in machinery, automotive, and precision equipment. Its 10-32 UNF fine thread and Class 3A fit provide secure fastening with high resistance to vibration loosening, while the hex socket drive and knurled head facilitate easy installation in confined spaces. The corrosion-resistant material and high tensile strength ensure durability in demanding environments, reducing maintenance and replacement frequency. Ideal for use in pivoting mechanisms, bearing retainers, and structural linkages where precision and reliability are paramount.

Specification Summary & Compliance

This shoulder screw features a 10-32 UNF thread with Class 3A fit for precise engagement, a shoulder diameter of 1/4" with tolerance from -0.004" to -0.002", and a shoulder length of 2" with tolerance from -0.005" to 0.005". It meets ASME B18.3 specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and industry-standard quality.