S-94115A417 3/8"-24 x 3/8" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior mar protection with a non-marring nylon tip that prevents damage to expensive components and maintains surface integrity
• Exceptional vibration resistance due to the fine UNF thread and Class 3A fit, ensuring a secure, long-lasting hold in high-stress applications
• Reliable performance in extreme temperatures with a nylon tip rated from -50° to 250° F, suitable for diverse industrial environments
• Enhanced durability and corrosion resistance from the black-oxide finish on alloy steel, extending the screw's service life
• Optimized installation torque and grip with the 3/16" hex drive, providing superior driving power and reducing tool slippage
• Consistent high-strength fastening backed by Rockwell C28 hardness, ensuring the screw maintains its shape under heavy loads
• Guaranteed compliance and safety by meeting ASME B18.3, RoHS 3, and REACH standards for quality and environmental responsibility

Professional Applications & Engineering Value

This black-oxide alloy steel set screw is engineered to address common industrial challenges like component slippage, surface damage, and fastener failure under vibration. The Class 3A UNF fine thread provides a tighter, more precise fit than coarse threads, minimizing loosening in machinery, automotive assemblies, and precision equipment. The headless design with a hex drive allows for flush mounting in confined spaces, while the nylon 6/6 plastic tip acts as a resilient locking element that won't mar shafts or gears. By combining high hardness (Rockwell C28) with a protective oxide coating, this screw resists wear and environmental exposure, making it a reliable choice for OEMs and maintenance teams seeking durable, compliant fasteners that reduce downtime and replacement costs.

Specification Summary & Compliance

This set screw adheres to Class 3A thread fit for high-precision applications, with a 3/8"-24 UNF fine thread and right-hand direction. It is manufactured in accordance with ASME B18.3 specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets strict industry and environmental standards for safe use.