S-91677A106 1/4"-20 x 1/2" 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
- Enhanced Corrosion Resistance with Black-Oxide coating for reliable performance in demanding industrial environments
- Superior Thread Engagement through UNC coarse threading and Class 2A fit ensures secure fastening with reduced cross-threading risk
- Maximum Gripping Power from the ball tip design with Rockwell C60 hardness for permanent component positioning
- High-Strength Construction using alloy steel with Rockwell C32 hardness maintains structural integrity under heavy loads
- Space-Saving Headless Design allows for flush mounting in confined assembly spaces
- Easy Installation and Removal with 1/8" hex drive for efficient maintenance and adjustments
- Regulatory Compliance meeting RoHS 3 and REACH standards for global industrial applications
Professional Applications & Engineering Value
This Black-Oxide alloy steel set screw delivers exceptional engineering value for industrial applications requiring permanent component positioning. The UNC coarse thread configuration with Class 2A fit provides reliable engagement in various materials while minimizing installation torque requirements. The ball tip design with specialized Rockwell C60 hardness creates concentrated surface pressure, preventing slippage in high-vibration environments like machinery, automotive assemblies, and power transmission systems. The headless construction enables flush mounting in pulleys, gears, and collars where protruding fasteners would interfere with operation. The Black-Oxide surface treatment offers corrosion protection without significantly altering dimensional tolerances, making these set screws ideal for precision applications where both durability and exact sizing are critical.
Specification Summary & Compliance
This 1/4"-20 x 1/2" set screw features UNC coarse threading with Class 2A thread fit for standard industrial applications. Manufactured from high-strength alloy steel with Rockwell C32 hardness and precision-machined to inch system specifications. The ball tip maintains Rockwell C60 hardness for superior gripping performance. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets.
