S-90289A707 1/2"-13 x 1/2" ASME B18.3 Set Screws
Set Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior corrosion resistance with black-oxide coating, extending service life in harsh industrial environments.
- Exceptional holding power due to Rockwell C45 hardness, preventing loosening under high vibration and load.
- Reliable, precise engagement with Class 3A thread fit, ensuring tight tolerances and secure fastening in critical assemblies.
- Easy installation and removal using a standard 1/4" hex drive, reducing assembly time and tooling requirements.
- Enhanced grip and minimal surface damage from the cup tip design, ideal for repeated adjustments on shafts and collars.
- Secure anti-rotation locking provided by serrations, maintaining position without additional locking elements.
- Broad industrial compatibility with UNC coarse threads, facilitating quick assembly and disassembly in various applications.
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 cup tip deliver concentrated clamping force, making it perfect for securing pulleys, gears, and knobs on rotating shafts without protruding parts. The UNC coarse threads and Class 3A fit ensure rapid, reliable fastening in heavy machinery, automotive, and aerospace assemblies, reducing maintenance downtime. Combined with hex drive convenience, it streamlines installation in confined spaces, while the robust material and surface treatment resist wear and environmental degradation, supporting long-term operational integrity.
Specification Summary & Compliance
This set screw adheres to ASME B18.3 specifications, with precise 1/2"-13 UNC coarse threads and Class 3A thread fit for high accuracy. It is manufactured from alloy steel with a black-oxide finish and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety and regulatory adherence for global industrial use.
