S-97768A262 10-32 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and black oxide finish, ideal for harsh industrial environments.
• Precise alignment and smooth rotation ensured by the 1/4" shoulder diameter and 1-1/4" shoulder length with tight tolerances.
• High load-bearing capacity with 70,000 psi tensile strength and 35,000 psi minimum shear strength for demanding applications.
• Reliable fine thread engagement with 10-32 UNF Class 3A thread fit, reducing the risk of loosening under vibration.
• Secure and easy installation using the hex drive and knurled socket head, providing excellent grip and torque application.
• Long-term durability backed by Rockwell B55 hardness and compliance with ASME B18.3 standards.
• Environmental and safety compliance with RoHS 3 and REACH regulations, ensuring safe use in various industries.

Professional Applications & Engineering Value

This Black Oxide Stainless Steel Shoulder Screw is engineered to address critical challenges in precision machinery and industrial assemblies. The 18-8 stainless steel material combined with a black oxide finish provides excellent corrosion resistance, extending service life in humid or chemically aggressive settings. The 10-32 UNF fine thread and Class 3A thread fit ensure secure fastening with minimal backlash, essential for high-vibration environments like automotive or robotics. The precisely machined shoulder diameter and length allow for accurate component alignment, reducing wear and improving operational efficiency in applications such as pivots, bearings, and gear assemblies. Its hex drive and knurled head facilitate quick installation and maintenance, saving time in production lines.

Specification Summary & Compliance

This shoulder screw adheres to ASME B18.3 specifications, with precise dimensional controls including a shoulder diameter tolerance of -0.004" to -0.002" and shoulder length tolerance of -0.005" to 0.005". The thread fit is Class 3A, ensuring high precision for UNF fine threads. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material restrictions are met for industrial use.