S-92765A411 5/16"-18 x 1/2" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating, extending service life in demanding industrial environments
• Exceptional thread engagement with Class 3A fit for vibration-resistant, secure fastening in high-stress applications
• Optimized torque transmission through 5/32" hex drive, preventing tool slippage and ensuring consistent installation
• Enhanced material durability with Rockwell C45 hardness, maintaining structural integrity under repeated loads
• Precision oval tip design for concentrated contact pressure, minimizing component marring during adjustment
• Reliable coarse threading (UNC) enabling quicker installation and reduced cross-threading risks
• Full regulatory compliance meeting ASME B18.3, RoHS 3, and REACH standards for global project acceptance

Professional Applications & Engineering Value

Engineered for precision locking applications, this 5/16"-18 UNC set screw delivers exceptional performance in machinery, automotive, and aerospace assemblies. The black-oxide alloy steel construction provides superior corrosion protection while maintaining Rockwell C45 hardness for lasting performance in high-vibration environments. The headless hex drive design allows flush mounting in confined spaces, while the oval tip ensures secure component positioning without excessive surface deformation. With Class 3A thread fit and coarse thread spacing, this fastener eliminates backlash in pulleys, gears, and collars, solving critical alignment challenges in rotating equipment. The combination of right-hand threading and 5/32" drive size ensures compatibility with standard industrial tools for efficient maintenance and assembly operations.

Specification Summary & Compliance

This set screw maintains precise Class 3A thread fit tolerances per UNC standards with 0.313" thread diameter and 1/2" length. Manufacturing complies with ASME B18.3 specifications where identified under ASTM F912. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, ensuring hazardous substance restrictions are met for international industrial applications.