S-91306A270 10-24 x 5/16" 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
- Exceptional corrosion resistance with zinc plating that protects against rust and extends service life in demanding industrial environments
- Superior thread engagement and vibration resistance thanks to Class 3A fit and coarse UNC threading for reliable fastening in high-stress applications
- High-strength performance under load with 120,000 psi tensile strength and Rockwell C39 hardness to prevent stripping and deformation
- Easy installation and removal with 1/8" hex drive and rounded button head design that provides flush mounting and tool accessibility
- Full threading for maximum grip ensuring consistent clamping force along the entire 5/16" length for secure assemblies
- Compliance with major industry standards including ASME B18.3 and ASTM F835 for guaranteed dimensional accuracy and mechanical properties
- Environmentally responsible manufacturing with RoHS 3 and REACH compliance for safe use in regulated industries
Professional Applications & Engineering Value
These 10-24 UNC Class 3A zinc-plated alloy steel rounded head screws deliver critical reliability in industrial fastening applications where vibration resistance and corrosion protection are paramount. The coarse thread spacing and Class 3A thread fit ensure rapid assembly with minimal cross-threading risk, while the fully threaded design provides uniform stress distribution across the entire 5/16" length. Engineered with 120,000 psi tensile strength and Rockwell C39 hardness, these button head screws maintain integrity in high-vibration environments like machinery, automotive components, and electrical enclosures. The zinc-plated finish offers sacrificial protection against corrosion, making them ideal for outdoor equipment or humid manufacturing settings where fastener failure is not an option.
Specification Summary & Compliance
Manufactured to precise Class 3A thread tolerances with UNC coarse thread spacing and right-hand thread direction. These rounded head screws conform to ASME B18.3 dimensional specifications and ASTM F835 mechanical requirements. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations ensures safe usage across global markets.
