S-92765A005 4-40 x 3/16" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating that protects against rust and extends service life in demanding environments
• Exceptional holding power from Rockwell C45 hardness alloy steel that maintains clamping force under vibration and heavy loads
• Precise thread engagement with Class 3A fit UNC coarse threads ensuring reliable fastening and reduced cross-threading risks
• Space-saving headless design allowing flush mounting where clearance is limited while providing maximum grip surface
• Easy installation and removal with hex drive configuration that prevents cam-out and enables high torque application
• Secure component positioning through oval tip design that creates positive locking without damaging mating surfaces
• Industry compliance assurance meeting ASME B18.3 specifications for consistent quality and dimensional accuracy

Professional Applications & Engineering Value

This 4-40 UNC set screw delivers critical engineering solutions for precision assembly applications where space constraints and vibration resistance are paramount. The black-oxide alloy steel construction provides essential corrosion protection while maintaining the Rockwell C45 hardness needed for permanent positioning in machinery, automotive components, and electronic enclosures. The coarse UNC thread with Class 3A fit ensures rapid installation and reliable engagement in blind holes, while the headless design and oval tip prevent interference in compact assemblies. These industrial set screws effectively solve alignment and retention challenges in power transmission systems, precision instruments, and manufacturing equipment where hex drive accessibility and consistent clamping force are essential for operational reliability.

Specification Summary & Compliance

This precision fastener maintains Class 3A thread fit tolerances per UNC standards with 4-40 thread size and 3/16" length dimensions. Manufacturing conforms to ASME B18.3 specifications where applicable under ASTM F912. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant regarding substance restrictions, ensuring environmental regulation adherence for global industrial applications.