S-92695A759 1/4"-28 x 1 3/4" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with a 90° cone point that bites into mating surfaces to prevent component slippage
• Enhanced corrosion resistance from the black-oxide finish, extending service life in demanding environments
• High-strength, durable performance thanks to alloy steel construction and a Rockwell C45 hardness rating
• Precise, reliable fastening ensured by Class 3A thread fit for tight tolerances and minimal backlash
• Easy installation and high torque application with a headless, 1/8" hex drive design for flush mounting and secure driving
• Optimized for fine-thread applications with a 1/4"-28 UNF right-hand thread for superior adjustment and vibration resistance
• Guaranteed quality and safety through compliance with ASME B18.3, RoHS 3, and REACH standards

Professional Applications & Engineering Value

This black-oxide alloy steel set screw is engineered for critical applications where vibration resistance and positional security are paramount. The headless design with a hex drive allows for a flush finish in pulleys, gears, and collars, preventing interference in compact assemblies. Its 90° cone point concentrates force to create a permanent seating, effectively resisting loosening under dynamic loads. The Class 3A UNF fine thread provides a greater number of threads per inch, offering superior clamping force and finer adjustment capabilities compared to coarse threads. Manufactured from alloy steel and treated to a Rockwell C45 hardness, it delivers the necessary shear strength and durability for heavy-duty industrial machinery, automotive components, and precision equipment, ensuring long-term reliability.

Specification Summary & Compliance

This set screw features a 1/4"-28 UNF fine thread with a Class 3A fit for high-precision applications, ensuring tight tolerances and reliable engagement. It is manufactured in accordance with ASME B18.3 specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its suitability for use in regulated industries and global markets.