S-91375A227 5-44 x 3/8" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide coating, extending service life in harsh industrial environments.
• Maximum holding power from high-strength alloy steel and Rockwell C45 hardness, ensuring secure, long-term fastening.
• Precise Class 3A thread fit for tighter tolerances and reliable engagement in critical assemblies.
• Compact headless design with 1/16" hex drive allows installation in confined spaces without protruding components.
• Fine UNF threads provide increased thread engagement and vibration resistance in precision applications.
• Cup tip design creates positive seating and minimizes surface damage on shafts and components.
• Compliance with ASME B18.3, RoHS 3, and REACH ensures quality, safety, and environmental standards are met.

Professional Applications & Engineering Value

This 5-44 UNF Class 3A set screw is engineered to address common industrial challenges such as component slippage, vibration loosening, and corrosion in demanding environments. Made from alloy steel with a Black-Oxide surface treatment, it offers enhanced durability and resistance to oxidation, making it ideal for machinery, automotive, and precision equipment where reliable fastening solutions are critical. The headless hex drive and fine thread design ensure easy installation in tight spaces while maintaining high clamp load and alignment stability. Its cup tip provides concentrated contact pressure, reducing the risk of damage to shafts and gears, thereby extending the lifespan of assembled components in industrial set screws applications.

Specification Summary & Compliance

This set screw features a 5-44 UNF fine thread with Class 3A thread fit for high precision and a length of 3/8". It is manufactured in accordance with ASME B18.3 specifications and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets industry standards for performance and environmental safety.