S-92311A642 3/8"-24 x 1 1/2" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and long-term reliability.
• Exceptional holding power and minimal backlash due to the fine UNF thread and precise Class 3A thread fit.
• High-strength performance with a Rockwell B80 hardness rating, ensuring the screw withstands high vibrational and torsional loads.
• Secure, flush-mount installation enabled by the headless and hex drive design, providing a clean finish and preventing snagging.
• Enhanced grip and reduced workpiece damage from the cup tip, which concentrates force for a more secure fit.
• Reliable, standardized quality meeting ASME B18.3 specifications, ensuring interchangeability and consistent performance.
• Safe for regulated industries with full compliance to RoHS 3 and REACH environmental regulations.

Professional Applications & Engineering Value

This 3/8"-24 UNF Class 3A hex headless set screw is engineered to solve critical challenges in precision assemblies where space is constrained and vibration resistance is paramount. Manufactured from 18-8 Stainless Steel, it provides excellent corrosion resistance, making it suitable for applications in marine, chemical processing, and food machinery. The fine thread spacing and Class 3A thread fit offer tighter tolerances, reducing the risk of loosening under dynamic loads and ensuring a secure, permanent hold in pulleys, gears, and collars. The headless design with a hex drive allows for installation in recessed areas, while the cup tip bites into the shaft material without causing excessive damage, preserving the integrity of expensive components. This combination of features delivers reliable performance in demanding industrial set screw applications, from heavy machinery to precision instruments.

Specification Summary & Compliance

This set screw features a 3/8"-24 UNF fine thread with a Class 3A fit for high precision and a right-hand thread direction. It has a length of 1 1/2", a 3/16" hex drive, and a cup tip. The manufacturing and dimensional standards conform to ASME B18.3. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety requirements for industrial use.