S-97768A249 10-32 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from 18-8 Stainless Steel material, ideal for harsh industrial environments and reducing replacement frequency.
• Precise alignment and secure pivoting enabled by the 1/2" shoulder with tight tolerances, minimizing component wear and ensuring long-term assembly stability.
• High-strength performance with 70,000 psi tensile and 35,000 psi shear strength, providing reliable load-bearing capacity in demanding applications.
• Superior thread engagement and vibration resistance due to the Class 3A fit and 10-32 UNF fine thread, preventing loosening under dynamic loads.
• Enhanced durability and wear resistance from the Black Oxide finish and Rockwell B55 hardness, extending service life in abrasive conditions.
• Secure and efficient installation with the hex socket drive and knurled head, allowing for high torque application without slippage.
• Compliance with major industry standards including ASME B18.3, RoHS 3, and REACH, ensuring quality and environmental safety for global supply chains.

Professional Applications & Engineering Value

This 18-8 Stainless Steel shoulder screw is engineered to address critical challenges in precision machinery, automation systems, and heavy-duty equipment. The 10-32 UNF fine thread with Class 3A fit ensures minimal backlash and superior vibration resistance, crucial for maintaining alignment in rotating assemblies and linkages. The 1/2" shoulder length provides a consistent bearing surface, reducing fretting and wear on mating components, while the Black Oxide finish enhances corrosion protection in humid or chemically aggressive environments. Ideal for use in industrial applications such as jigs, fixtures, and conveyor systems, this screw delivers reliable performance where dimensional accuracy and long-term durability are paramount. Its hex drive and knurled head facilitate secure handling during installation, streamlining maintenance and assembly processes.

Specification Summary & Compliance

This shoulder screw adheres to ASME B18.3 specifications, with a Class 3A thread fit for precise engagement and a shoulder diameter tolerance of -0.004" to -0.002". The 1/2" shoulder length maintains a tolerance of -0.005" to 0.005", ensuring consistent performance in aligned assemblies. It is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for industrial components.