S-91255A114 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 black-oxide coating for extended service life in demanding industrial environments
- Exceptional mechanical strength with 120,000 psi tensile rating and Rockwell C37 hardness for heavy-duty applications
- Precision Class 3A thread fit ensures reliable engagement and vibration resistance in critical assemblies
- Easy installation and removal with standard 3/8" hex drive compatibility for efficient maintenance operations
- Full threading along 1" length provides maximum grip and load distribution across connected components
- Coarse UNC thread pattern enables rapid assembly and superior performance in high-vibration settings
- Comprehensive regulatory compliance meets ASME, ASTM, RoHS 3 and REACH standards for global project acceptance
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these black-oxide alloy steel rounded head screws deliver exceptional performance where corrosion resistance and high tensile strength are critical. The 5/8"-11 UNC coarse threading combined with Class 3A precision fit ensures secure fastening in high-vibration environments such as heavy machinery, construction equipment, and automotive assemblies. The fully threaded design maximizes surface contact for superior load distribution, while the button head profile provides a low-profile finish that reduces snagging hazards. The 3/8" hex drive accommodates standard industrial tools for efficient installation and maintenance cycles, making these industrial screws ideal for applications requiring repeated access without compromising fastener integrity.
Specification Summary & Compliance
Manufactured to exacting standards with Class 3A thread fit and UNC coarse thread specifications. Compliant with ASME B18.3 dimensional requirements and ASTM F835 mechanical properties. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance standards for use in regulated industries. All fasteners feature right-hand threading and are supplied in inch system measurements with precise dimensional tolerances maintained throughout production.
