S-92311A370 3/8"-24 x 1 3/4" 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 thread engagement and vibration resistance due to the UNF fine thread and tight Class 3A fit, preventing loosening in dynamic applications.
• High-strength, reliable fastening with a Rockwell B80 hardness, ensuring the set screw maintains its form and clamping force under stress.
• Easy and secure installation with high torque capability provided by the 3/16" hex drive, allowing for a positive grip and straightforward assembly.
• Effective component locking and minimal surface marring from the cup point tip, which concentrates force for a secure grip without excessive damage to the shaft.
• Space-saving headless design for applications where a protruding fastener head is not permissible or desirable.
• Guaranteed material safety and environmental compliance, meeting RoHS 3 and REACH standards for use in regulated industries.

Professional Applications & Engineering Value

This 3/8"-24 UNF Class 3A set screw is engineered to solve critical challenges in precision assembly and machinery. The 18-8 stainless steel material provides excellent resistance to rust and corrosion, making it suitable for use in demanding environments such as marine, chemical processing, and food-grade equipment. The fine UNF threading and Class 3A fit offer a tighter tolerance than standard fits, which is crucial for applications subject to high vibration, ensuring the screw remains securely in place and maintains clamping force. The headless design with a hex drive allows for installation in confined spaces where a traditional bolt head would not fit, while the cup point digs into the mating surface to prevent rotational slippage of components on shafts, collars, and gears. This combination of features delivers reliable, long-lasting performance in power transmission systems, precision instruments, and automated machinery.

Specification Summary & Compliance

This set screw features a 3/8"-24 UNF fine thread with a precision Class 3A thread fit, ensuring high dimensional accuracy and reliable performance. It is manufactured in compliance with the ASME B18.3 specification for socket set screws. The product is confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to strict environmental and safety regulations for hazardous substances.