S-94105A730 1/2"-20 x 1/2" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating that protects against rust in demanding industrial environments
• Exceptional thread precision with Class 3A fit ensuring tight, secure fastening with minimal backlash
• High torque capability through 1/4" hex drive design that prevents stripping during installation
• Maximum space efficiency with headless construction ideal for confined applications
• Enhanced durability with Rockwell C45 hardness maintaining structural integrity under heavy loads
• Reliable fine thread engagement with 1/2"-20 UNF spacing providing superior vibration resistance
• Optimized surface contact with flat tip design distributing clamping force evenly

Professional Applications & Engineering Value

This black-oxide alloy steel set screw delivers critical performance in precision assembly applications where vibration resistance and permanent positioning are paramount. The Class 3A thread fit ensures exacting dimensional accuracy for secure fastening in pulleys, gears, and collars, while the headless design provides flush mounting in space-constrained machinery. Engineered with Rockwell C45 hardness, it maintains clamping force under extreme operational stresses, making it ideal for automotive, aerospace, and heavy equipment applications. The fine UNF threads offer superior resistance to loosening in high-vibration environments, and the black-oxide surface treatment provides essential corrosion protection in harsh industrial conditions.

Specification Summary & Compliance

Manufactured to ASME B18.3 and ASTM F912 specifications with precise Class 3A thread tolerances for superior fit. Features 1/2"-20 UNF fine threads with right-hand direction and 0.5" thread diameter. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations ensures safe use across global industrial markets.