S-91306A419 3/8"-16 x 1" 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 tensile strength of 120,000 PSI ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Superior corrosion resistance from the zinc-plated alloy steel construction, extending service life in demanding industrial environments.
- Precise Class 3A thread fit provides excellent engagement and vibration resistance, minimizing loosening in critical assemblies.
- Convenient hex drive design with 7/32" size allows for easy installation and removal using standard tools, speeding up assembly processes.
- Fully threaded coarse UNC spacing enables faster driving and better grip in softer materials, improving installation efficiency.
- Rounded button head profile offers a low-profile finish that reduces snagging while maintaining a professional appearance.
- Comprehensive compliance with ASME B18.3, ASTM F835, RoHS 3, and REACH ensures product reliability and environmental safety.
Professional Applications & Engineering Value
This 3/8"-16 UNC zinc-plated alloy steel rounded head screw delivers critical engineering advantages for industrial applications requiring both strength and corrosion protection. The combination of Rockwell C39 hardness and 120,000 PSI tensile strength makes it ideal for heavy machinery, structural frameworks, and automotive assemblies where vibration resistance is paramount. The fully threaded Class 3A coarse spacing ensures maximum thread engagement in various materials, from steel to aluminum, while the hex drive compatibility provides secure torque transmission during installation. These features collectively address common industrial challenges including joint integrity maintenance, corrosion-induced degradation, and assembly efficiency in production environments.
Specification Summary & Compliance
This fastener maintains precise Class 3A thread fit tolerances according to UNC standards, with coarse thread spacing for optimal performance. Manufacturing complies with ASME B18.3 and ASTM F835 specifications, ensuring dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its suitability for global industrial applications.
