S-94105A616 3/8"-24 x 1/4" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Maximum holding power with Class 3A thread fit for secure, vibration-resistant fastening in demanding applications
• Enhanced corrosion resistance from the black-oxide finish, extending service life in various industrial environments
• Superior strength and durability due to alloy steel construction with Rockwell C45 hardness
• Easy installation and removal with the internal hex drive (3/16"), allowing for high torque application
• Space-saving design as a headless set screw, ideal for applications where protruding fastener heads are not feasible
• Precise engagement with fine (UNF) threads and a flat tip for consistent, reliable contact with the mating surface
• Regulatory compliance assurance, meeting RoHS 3 and REACH standards for safe and responsible manufacturing

Professional Applications & Engineering Value

This black-oxide alloy steel set screw is engineered to solve critical challenges in industrial assembly and machinery. The Class 3A thread fit and fine UNF threads provide a tighter tolerance and superior resistance to loosening under vibration, a common failure point in dynamic systems. The headless, hex drive design allows for flush mounting in pulleys, gears, and collars, maximizing space efficiency. The combination of alloy steel and a Rockwell C45 hardness ensures the screw can withstand high shear and clamp loads without deforming, while the black-oxide surface treatment offers a durable layer of protection against rust and corrosion, making it a reliable choice for automotive, aerospace, and heavy equipment applications.

Specification Summary & Compliance

This set screw features a 3/8"-24 UNF thread with a Class 3A fit for high-precision applications. It is manufactured to meet ASME B18.3 and ASTM F912 specifications, ensuring dimensional accuracy and consistent performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of hazardous substances and safe for use in regulated markets.