S-92765A317 1/4"-20 x 1 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 holding power through Class 3A thread fit precision, preventing loosening under vibration and load
• High-strength performance with Rockwell C45 hardness alloy steel, maintaining integrity under heavy mechanical stress
• Secure installation and removal using the 1/8" hex socket drive, enabling high torque application without head interference
• Optimized material contact through oval tip design, minimizing component damage while ensuring firm positioning
• Reliable coarse threading with UNC 1/4"-20 specification, providing quick assembly and strong engagement in various materials
• Regulatory compliance assurance meeting ASME B18.3, RoHS 3, and REACH standards for global industrial applications

Professional Applications & Engineering Value

This black-oxide alloy steel set screw delivers critical engineering advantages in industrial fastening systems where vibration resistance and positional security are paramount. The headless design with hex socket drive enables flush mounting in confined spaces while accommodating high installation torque. The UNC coarse threads with Class 3A fit provide superior engagement in soft metals, plastics, and composite materials, preventing stripping and maintaining clamping force under dynamic loads. The oval tip configuration distributes contact pressure evenly, protecting precision components from surface damage while ensuring positive location. These set screws are engineered for demanding applications including machinery alignment, gear positioning, pulley fixation, and precision equipment assembly where reliability and repeatability are essential.

Specification Summary & Compliance

Manufactured to exacting standards with Class 3A thread fit tolerance for precision engagement, UNC 1/4"-20 coarse threading with right-hand direction, and 1-1/2" length dimensional consistency. Complies with ASME B18.3 dimensional specifications, ASTM F912 material requirements, RoHS 3 (2015/863/EU) for hazardous substance restriction, and REACH (EC 1907/2006) environmental compliance. The Rockwell C45 hardness ensures consistent mechanical performance across production batches.