S-97832A254 5/8"-11 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.
• Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable performance in high-stress applications.
• Precise and secure assembly ensured by Class 3A thread fit and UNC coarse threads for vibration resistance and easier alignment.
• Enhanced grip and tool engagement from the 3/8" hex drive and knurled head, preventing slippage during installation and removal.
• Accurate component positioning with a standard shoulder fit and controlled diameter/length tolerances for consistent mating and alignment.
• High durability and wear resistance backed by a Rockwell B55 hardness, maintaining integrity under repeated loads.
• Guaranteed compliance and reliability meeting ASME B18.3 specifications and environmental standards like RoHS 3 and REACH.

Professional Applications & Engineering Value

This 5/8"-11 UNC shoulder screw is engineered to address critical alignment and load-bearing challenges in industrial applications. The 18-8 stainless steel material provides excellent resistance to corrosion and oxidation, making it suitable for machinery, automotive assemblies, and equipment exposed to moisture or chemicals. The coarse UNC thread and Class 3A fit ensure tight, secure fastening that resists loosening under vibration, while the precision shoulder diameter and length allow for exact positioning of moving parts like gears, pulleys, and linkages. The 3/8" hex drive and knurled head offer superior torque transmission and handling, reducing installation time and improving safety in high-torque scenarios. By combining high tensile and shear strength with strict dimensional accuracy, this screw minimizes downtime and maintenance costs in demanding engineering environments.

Specification Summary & Compliance

This shoulder screw adheres to ASME B18.3 specifications, with a Class 3A thread fit for superior precision and a UNC coarse thread profile. Dimensional tolerances include a shoulder diameter of -0.004" to -0.002" and shoulder length of -0.005" to 0.005". The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets environmental and safety standards for global industrial use.