S-91306A410 5/16"-18 x 1 1/2" 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-plated alloy steel construction, extending service life in demanding environments
- Exceptional load-bearing capacity with 120,000 psi tensile strength, ensuring reliable performance under high stress
- Precise thread engagement with Class 3A fit UNC coarse threads, providing secure fastening and vibration resistance
- Easy installation and removal with 3/16" hex drive and rounded button head design, reducing assembly time
- Full thread coverage along the 1-1/2" length, offering maximum grip and adjustability in various material thicknesses
- Consistent hardness at Rockwell C39, maintaining structural integrity and preventing stripping during torque application
- Regulatory compliance assurance meeting ASME B18.3, ASTM F835, RoHS 3, and REACH standards for global industrial use
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these zinc-plated alloy steel rounded head screws deliver critical performance where vibration resistance and corrosion protection are paramount. The fully threaded UNC coarse spacing ensures rapid installation in machinery, structural frames, and equipment assemblies, while the Class 3A thread fit minimizes loosening under dynamic loads. With a 120,000 psi tensile strength and Rockwell C39 hardness, they withstand extreme mechanical stress in automotive, construction, and manufacturing sectors. The zinc plating provides a durable barrier against oxidation, making these hex drive screws ideal for outdoor or humid environments where fastener failure is not an option.
Specification Summary & Compliance
This 5/16"-18 x 1-1/2" rounded head screw features precise UNC coarse thread spacing with Class 3A fit tolerance for superior thread engagement. Manufactured in compliance with ASME B18.3 and ASTM F835 specifications, it guarantees dimensional accuracy and performance consistency. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring adherence to international environmental and safety regulations for industrial components.
