S-95289A532 3/8"-16 x 1/2" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Exceptional holding power with extended tip design that bites deeper into mating components for secure, permanent fastening
• Superior corrosion resistance through black oxide surface treatment that protects against rust in demanding industrial environments
• High-strength performance with Rockwell C45 hardness rating that withstands heavy vibration and load conditions
• Precise Class 3A thread fit ensuring tight tolerances and reliable engagement in critical assembly applications
• Easy installation and removal with hex drive design that provides excellent torque transmission without stripping
• Coarse UNC threading enables quick assembly and disassembly while maintaining strong holding capability
• Headless construction allows for flush mounting in space-constrained applications without protruding hardware

Professional Applications & Engineering Value

This black oxide alloy steel set screw delivers exceptional engineering value in applications requiring permanent component positioning and reliable torque transmission. The extended tip design creates deeper engagement with mating parts, solving common issues of component slippage under vibration and heavy loads. The 3/8"-16 UNC coarse thread configuration combined with Class 3A precision fit ensures consistent performance in pulley systems, gear assemblies, and shaft collars where maintaining precise alignment is critical. The hex drive provides superior torque capability compared to other drive types, reducing installation time while preventing fastener damage during high-torque applications. This headless set screw is particularly valuable in machinery where space constraints prohibit protruding fastener heads, making it ideal for rotating equipment, motor mounts, and precision manufacturing applications.

Specification Summary & Compliance

This set screw maintains Class 3A thread fit tolerance per UNC standards with precise dimensional control. Manufactured to ASME B18.3 specifications (ASTM F912) ensuring consistent quality and performance. The extended tip features controlled dimensions with tip length tolerance of -0.005" to 0" and tip diameter tolerance of -0.009" to 0". Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for global industrial applications requiring strict regulatory adherence.