S-94495A264 5/16"-18 x 1/2" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Vibration-resistant locking with Nylon Patch thread locker prevents loosening under dynamic loads, maintaining secure connections in high-stress applications.
• Enhanced durability from Rockwell C45 hardness and black-oxide alloy steel construction resists wear, corrosion, and mechanical deformation over extended use.
• Precise thread engagement with Class 3A fit ensures tight tolerances and reliable fastening in demanding UNC coarse thread assemblies.
• Wide temperature adaptability (-50° to 250°F) allows consistent performance in both extreme cold and high-heat industrial environments.
• Space-saving headless design with 5/32" hex drive enables flush mounting and easy installation in confined spaces using standard tools.
• Regulatory compliance with ASME B18.3, RoHS 3, and REACH standards guarantees material safety and interoperability in global supply chains.
• Optimized for right-hand coarse threads (5/16"-18 UNC) to provide rapid assembly and high clamping force in machinery and equipment.

Professional Applications & Engineering Value

Engineered for critical industrial set screw applications, this black-oxide alloy steel fastener addresses common failure points like vibration-induced loosening and thermal cycling. The Nylon Patch locking mechanism chemically bonds to mating threads, creating a permanent seal that outperforms mechanical locks in high-temperature environments up to 250°F. Its headless design and hex drive configuration allow seamless integration into rotating components, shafts, and collars where protrusions cause interference. The Class 3A thread fit and UNC coarse spacing ensure rapid installation while maintaining positional accuracy in production lines, reducing assembly time and rework rates. Ideal for power transmission systems, motor mounts, and precision machinery where thread locker reliability is non-negotiable.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with Class 3A thread fit tolerances for superior engagement. Features 5/16"-18 UNC coarse threads with right-hand orientation and flat tip design. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring hazardous substance restrictions are met for international industrial deployments.