S-91375A555 1/4"-28 x 3/16" ASME B18.3, ASTM F912 Set Screws
Set Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with Black-Oxide finish, extending service life in harsh industrial environments.
- High-strength durability from Alloy Steel and Rockwell C45 hardness, ensuring reliable, long-term fastening under heavy loads.
- Precise, secure fit with Class 3A thread fit and UNF fine threads, minimizing loosening in high-vibration applications.
- Easy installation and removal using the 1/8" Hex drive and headless design, ideal for confined spaces.
- Enhanced gripping power from the Cup Tip, providing firm contact and preventing component slippage.
- Compliance with industry standards including ASME B18.3, ensuring consistent quality and interchangeability.
- Environmental and safety assurance through RoHS 3 and REACH compliance, meeting global regulatory requirements.
Professional Applications & Engineering Value
This Black-Oxide Alloy Steel set screw is engineered to address common industrial challenges such as vibration-induced loosening and corrosion in machinery assemblies. The UNF fine thread and Class 3A fit provide exceptional clamping force and positional accuracy, critical for precision equipment, automotive components, and heavy-duty machinery. The headless hex drive design allows for flush mounting in tight spaces, while the cup tip ensures maximum contact and resistance to rotational forces. Ideal for securing gears, pulleys, and collars, this screw offers reliable performance in demanding applications, reducing maintenance needs and enhancing operational safety.
Specification Summary & Compliance
This set screw adheres to ASME B18.3 specifications, with a 1/4"-28 UNF fine thread and Class 3A thread fit for high precision. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring compliance with hazardous substance restrictions. Manufactured from Alloy Steel with a Rockwell C45 hardness, it guarantees dimensional accuracy and durability for industrial use.
