S-91306A259 6-32 x 1/8" ASTM F835 Steel Button Head Hex-Drive Screws
Steel Button Head Hex-Drive 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 zinc plating that protects against rust and extends service life in demanding environments
- Exceptional mechanical strength with 120,000 psi tensile strength and Rockwell C39 hardness for reliable performance under high stress
- Precise, secure fastening ensured by Class 3A thread fit and UNC coarse threads that resist loosening and simplify installation
- Efficient installation and removal with a 5/64" hex drive that provides excellent torque transfer and reduces tool slippage
- Versatile rounded button head design that offers a low-profile finish, reducing snagging while maintaining a professional appearance
- Full threading along the 1/8" length for maximum grip and uniform load distribution across the entire fastener
- Compliance with major industry standards including ASME B18.3 and ASTM F835, ensuring reliability and interchangeability
Professional Applications & Engineering Value
These 6-32 UNC coarse thread screws are engineered to address common industrial challenges such as vibration-induced loosening and material fatigue. The zinc-plated alloy steel construction provides a durable barrier against corrosion, making them ideal for electronics assembly, machinery enclosures, and automotive components where exposure to moisture or chemicals is a concern. The Class 3A thread fit and coarse threading enhance engagement in both metal and plastic substrates, reducing cross-threading risks and ensuring consistent clamp load. With a fully threaded design and hex drive, these rounded head screws deliver quick, secure fastening in tight spaces, improving assembly efficiency and long-term reliability in high-vibration applications.
Specification Summary & Compliance
This product meets precise dimensional standards with Class 3A thread fit and UNC coarse thread specifications. Manufacturing adheres to ASME B18.3 and ASTM F835 for consistent quality and performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions are met.
