S-92505A574 5/16"-18 x 1/4" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Maximum holding power with Class 3A thread fit ensuring tight, secure fastening in demanding applications
• Superior corrosion resistance thanks to the Black Oxide finish on alloy steel, extending service life in harsh environments
• Enhanced durability from Rockwell C45 hardness, providing excellent resistance to wear and deformation
• Reliable engagement with extended tip design for deeper penetration and improved grip on shafts and collars
• Precise installation using 5/32" hex drive, allowing for high torque application without slippage
• Broad compatibility with UNC coarse threads (5/16"-18) ensuring easy assembly and interchangeability
• Regulatory confidence with compliance to ASME B18.3, RoHS, and REACH standards for safe, quality-assured use

Professional Applications & Engineering Value

This 5/16"-18 UNC set screw is engineered to address critical fastening challenges in industrial machinery, automotive components, and precision equipment. The Black Oxide Alloy Steel construction delivers exceptional corrosion resistance, reducing maintenance needs in humid or chemically exposed environments. Its headless design and extended tip enable flush mounting and deeper penetration into materials, preventing rotational slippage in pulleys, gears, and collars. The Class 3A thread fit and coarse thread spacing ensure rapid installation and high vibration resistance, making it ideal for applications requiring reliable, long-term positioning. Combined with a hex drive for secure tool engagement, this set screw provides a robust solution for engineers seeking durability and precision in industrial fastening systems.

Specification Summary & Compliance

This set screw features precise dimensional tolerances, including a Class 3A thread fit per UNC standards, ensuring optimal engagement and strength. The extended tip maintains tight diameter and length tolerances for consistent performance. Manufactured in compliance with ASME B18.3 specifications, it also meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, guaranteeing safety and sustainability in industrial use.