S-91375A940 1/2"-13 x 3/4" 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 vibration resistance with Class 3A thread fit for secure, long-lasting fastening in high-stress environments
- Enhanced durability and corrosion protection from zinc plating on alloy steel, extending service life in industrial settings
- High hardness rating of Rockwell C45 ensures excellent wear resistance and reduced risk of stripping under heavy loads
- Reliable coarse UNC threading provides quick installation and strong holding power in various materials
- Hex drive design with 1/4" drive size allows for easy, high-torque installation using standard tools
- Cup tip configuration offers concentrated contact pressure to prevent component slippage and improve grip
- Headless construction enables flush mounting in tight spaces without protruding hardware
Professional Applications & Engineering Value
This 1/2"-13 UNC set screw is engineered to address common industrial challenges such as component loosening due to vibration and dynamic loads. Constructed from zinc plated alloy steel, it combines high tensile strength with effective corrosion resistance, making it ideal for machinery, automotive assemblies, and heavy equipment where reliability is critical. The cup tip design concentrates force on a small area, minimizing movement in pulleys, gears, and collars. With a coarse thread and Class 3A fit, it ensures rapid assembly and consistent clamping force, reducing maintenance downtime. The hex drive and headless profile facilitate installation in confined spaces, providing a versatile solution for permanent or adjustable positioning in demanding industrial applications.
Specification Summary & Compliance
This set screw features precise Class 3A thread fit per UNC standards with a thread size of 1/2"-13 and coarse spacing. It complies with ASME B18.3 manufacturing specifications and is verified to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe and sustainable use in global markets.
