S-92695A403 5/16"-18 x 3/8" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Exceptional holding power with a 90° cone point that bites deeply into materials for secure, vibration-resistant fastening
• Superior corrosion resistance from the black-oxide coating on alloy steel, extending service life in harsh industrial environments
• Precise Class 3A thread fit ensures tight tolerances and reliable engagement for critical assembly applications
• High-strength construction with Rockwell C45 hardness provides excellent durability and resistance to wear and deformation
• Easy installation and removal using a standard 5/32" hex drive, ideal for headless designs in confined spaces
• Coarse UNC threads enable quick assembly and reduced cross-threading risks in right-hand threaded applications
• Compliance with major industry standards guarantees consistent quality and performance for engineering projects

Professional Applications & Engineering Value

This black-oxide alloy steel set screw is engineered to address common industrial challenges like component slippage, corrosion-induced failure, and assembly inefficiency. The 5/16"-18 UNC coarse thread design with Class 3A precision fit ensures rapid, secure fastening in machinery, automotive, and equipment manufacturing, minimizing downtime. The 90° cone point concentrates pressure for superior grip on shafts, pulleys, and gears, preventing loosening under vibration. Combined with the corrosion-resistant black-oxide coating, it delivers long-term reliability in demanding environments, making it an ideal choice for set screw applications requiring high strength and environmental compliance.

Specification Summary & Compliance

This set screw adheres to ASME B18.3 and ASTM F912 specifications, with precise Class 3A thread fit for inch-series applications. It features a 5/16"-18 UNC coarse thread, 3/8" length, and 90° cone point, manufactured from alloy steel with Rockwell C45 hardness. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial use.