S-97768A259 10-32 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 Stainless Steel construction and Black Oxide finish, ideal for harsh industrial environments.
• High-strength performance offering 70,000 psi tensile and 35,000 psi shear strength for reliable load-bearing in demanding applications.
• Precise alignment and smooth rotation ensured by the 1" shoulder length with tight tolerances, reducing wear on mating components.
• Secure, fine-thread engagement with 10-32 UNF Class 3A thread fit, providing superior vibration resistance and holding power.
• Easy installation and removal using a standard 1/8" hex drive and knurled head for improved grip during assembly.
• Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring quality and environmental safety.
• Durable, long-lasting design with Rockwell B55 hardness, maintaining integrity under repeated use and stress.

Professional Applications & Engineering Value

This shoulder screw is engineered to address critical alignment and durability challenges in precision assemblies. The 18-8 Stainless Steel material, combined with a Black Oxide finish, provides excellent resistance to corrosion and oxidation, making it suitable for automotive, aerospace, and machinery applications where exposure to moisture or chemicals is common. The 10-32 UNF fine thread and Class 3A fit ensure tight, secure fastening that minimizes loosening from vibrations, while the 1" shoulder length acts as a precise pivot or spacer, reducing friction and wear in rotating parts like bearings and linkages. Its socket head with hex drive allows for efficient torque application in confined spaces, enhancing assembly speed and reliability in high-volume production environments.

Specification Summary & Compliance

This shoulder screw features a 10-32 UNF thread with Class 3A fit for high precision, a shoulder diameter of 1/4" with tolerances from -0.004" to -0.002", and a shoulder length of 1" with tolerances from -0.005" to 0.005". It meets ASME B18.3 specifications for dimensional accuracy and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial use.