S-92765A305 1/4"-20 x 1/2" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with Class 3A thread fit for precise, vibration-resistant fastening in demanding applications
• Enhanced corrosion resistance from the black-oxide finish, extending service life in harsh industrial environments
• High strength and durability thanks to alloy steel construction with Rockwell C45 hardness for reliable performance
• Easy installation and removal with a 1/8" hex drive, allowing for efficient assembly in tight spaces
• Secure component positioning via the oval tip design, minimizing damage to shafts and hubs
• Wide compatibility with coarse UNC 1/4"-20 threads, ensuring easy integration into standard assemblies
• Compliance with industry standards including ASME B18.3, RoHS 3, and REACH for safe, regulated use

Professional Applications & Engineering Value

This black-oxide alloy steel set screw is engineered to address common industrial challenges such as component slippage and corrosion in machinery. The headless design with hex drive allows for flush mounting in confined areas, while the coarse UNC thread and Class 3A fit provide excellent grip and resistance to loosening under vibration. Ideal for securing gears, pulleys, and collars on shafts, the oval tip distributes pressure evenly, reducing wear on connected parts. Made from high-strength alloy steel with Rockwell C45 hardness, it ensures long-term reliability in automotive, aerospace, and manufacturing settings, meeting rigorous ASME B18.3 specifications for consistent quality.

Specification Summary & Compliance

This set screw features a 1/4"-20 UNC coarse thread with Class 3A precision tolerance for tight fits, and a length of 1/2". It complies with ASME B18.3 manufacturing standards and is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring environmental safety and regulatory adherence.