S-92313A421 3/8"-16 x 1 1/2" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction, ideal for harsh environments and extended service life.
• Exceptional holding power ensured by the Class 3A thread fit, providing a precise, tight, and secure fit for critical assemblies.
• High mechanical strength and durability from the Rockwell B80 hardness, resisting wear and deformation under heavy loads.
• Secure, non-slip fastening with the hex drive and cup tip design, allowing for high torque application and excellent grip on the shaft.
• Reliable performance in demanding applications due to the coarse UNC thread, which facilitates easier and faster installation.
• Guaranteed quality and interchangeability as it meets the stringent dimensional requirements of the ASME B18.3 standard.
• Safe for use in regulated industries with full compliance to RoHS 3 and REACH environmental regulations.

Professional Applications & Engineering Value

This 3/8"-16 UNC hex headless set screw is engineered to solve critical fastening challenges in industrial settings. Manufactured from 316 Stainless Steel, it offers outstanding resistance to corrosion and chemicals, making it a top choice for marine, chemical processing, and food-grade equipment where exposure to moisture and aggressive substances is a constant concern. The Class 3A thread fit and coarse thread design ensure a robust and vibration-resistant connection, preventing loosening in high-stress machinery, power transmission systems, and precision assemblies. The headless and cup tip configuration allows for a flush finish and concentrated point pressure, securely locking collars, gears, and pulleys onto shafts without protruding parts. This combination of material properties and thread precision delivers reliable performance, reducing maintenance needs and downtime in heavy-duty and high-performance applications.

Specification Summary & Compliance

This set screw features a 3/8"-16 UNC thread with a Class 3A fit for high precision and a 1-1/2" length. It is manufactured in accordance with the ASME B18.3 standard, ensuring dimensional accuracy and reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental responsibility for global industrial use.