S-91306A445 5/8"-11 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
- Superior corrosion resistance with zinc-plated alloy steel construction for extended service life in demanding environments
- Exceptional load-bearing capacity with 120,000 psi tensile strength and Rockwell C37 hardness for heavy-duty applications
- Precise, secure fastening with Class 3A thread fit ensuring tight tolerances and reliable connections
- Easy installation and removal with 3/8" hex drive compatibility for efficient tool engagement
- Maximum thread engagement through fully threaded design for superior holding power across the entire length
- Reduced head profile interference with rounded button head design for applications requiring low-clearance fastening
- Industry-standard compliance meeting ASME B18.3 and ASTM F835 specifications for guaranteed performance
Professional Applications & Engineering Value
These 5/8"-11 UNC rounded head screws provide critical engineering solutions where high tensile strength and corrosion resistance are paramount. The zinc-plated alloy steel construction offers superior protection against environmental degradation, while the Class 3A thread fit ensures precise mating with corresponding nuts and threaded components in industrial machinery, structural assemblies, and heavy equipment. The combination of coarse threading and fully threaded design delivers maximum pull-out resistance, making these hex drive screws ideal for applications requiring reliable fastening under vibration and dynamic loading conditions. The rounded button head profile minimizes protrusion while maintaining excellent drive engagement for confined spaces.
Specification Summary & Compliance
Manufactured to exacting standards with Class 3A thread fit precision and UNC coarse thread specifications. Compliant with ASME B18.3 dimensional requirements and ASTM F835 mechanical properties. Meets environmental regulations including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) standards for hazardous substance restrictions. Features right-hand threading with 5/8"-11 thread size and 1" length for consistent performance across industrial applications.
