S-94105A619 3/8"-24 x 1/2" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from the black-oxide finish, extending service life in demanding industrial environments
• Superior thread engagement and vibration resistance with Class 3A precision fit and UNF fine threads for secure, long-lasting fastening
• High-strength performance backed by Rockwell C45 hardness, ensuring reliable load-bearing capacity in heavy-duty applications
• Easy installation in confined spaces thanks to the headless design and 3/16" hex drive for straightforward tool access
• Flawless surface contact with the flat tip design, preventing component damage and providing consistent clamping force
• Full regulatory compliance meeting ASME B18.3, RoHS 3, and REACH standards for safe, globally acceptable use
• Optimized for precision assemblies combining right-hand threading and fine pitch for accurate positioning in machinery and equipment

Professional Applications & Engineering Value

This black-oxide alloy steel set screw delivers critical engineering value in applications where space constraints and vibration are major concerns. The headless design and hex drive allow installation in tight assemblies—common in motor mounts, gear systems, and precision instruments—without compromising tool access. Its Class 3A UNF fine threads provide superior resistance to loosening under dynamic loads, while the flat tip ensures mar-free contact on shafts or collars. Made from hardened alloy steel, it withstands high stress and repetitive adjustments, making it ideal for industrial machinery, automotive components, and manufacturing equipment that demand reliability and dimensional accuracy.

Specification Summary & Compliance

This set screw adheres to Class 3A thread fit tolerances per UNF standards, ensuring precise thread engagement. Manufacturing complies with ASME B18.3 specifications, and the product is verified as RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, confirming the absence of restricted substances. Key dimensions include a 3/8"-24 thread size, 1/2" length, and fine thread spacing, with material properties meeting Rockwell C45 hardness for consistent performance.