S-92765A359 1/4"-28 x 3/4" 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.
• Precise, secure fastening ensured by Class 3A thread fit, minimizing the risk of loosening under vibration.
• High-strength performance from alloy steel and Rockwell C45 hardness, providing reliable holding power.
• Easy installation and removal with the 1/8" hex drive, allowing for efficient assembly in confined spaces.
• Minimal surface protrusion due to the headless design and oval tip, ideal for smooth, flush mounting.
• Fine thread engagement with 1/4"-28 UNF threads, offering improved adjustment and resistance to stripping.
• Compliance with major standards including ASME B18.3 and ASTM F912, ensuring consistent quality and reliability.

Professional Applications & Engineering Value

This black-oxide alloy steel set screw is engineered to address common industrial challenges such as component slippage and corrosion-induced failure. Its headless design and oval tip provide a flush fit, reducing interference in precision machinery and rotating assemblies. The Class 3A thread fit and fine UNF threads ensure tight, vibration-resistant connections in applications like motor shafts, gears, and pulleys. Made from high-strength alloy steel with a Rockwell C45 hardness, it withstands heavy loads and repetitive stress, making it a dependable choice for industrial set screws in automotive, aerospace, and manufacturing sectors where durability and compliance are critical.

Specification Summary & Compliance

This set screw features a 1/4"-28 UNF fine thread with Class 3A thread fit for high precision and tight tolerances. It adheres to ASME B18.3 and ASTM F912 manufacturing specifications, ensuring consistent performance. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety standards for use in various global markets.