S-91253A855 3/4"-10 x 5" ASTM F835 Alloy Steel Hex Drive Flat Head Screws
Alloy Steel Hex Drive Flat Head 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 130,000 psi ensures reliable performance in heavy-duty applications, reducing the risk of fastener failure.
- Superior corrosion resistance from the black-oxide finish extends service life in harsh industrial environments.
- High-precision Class 3A thread fit provides secure, vibration-resistant connections for critical assemblies.
- Partially threaded design allows for controlled clamping force and easier alignment in structural applications.
- Heavy-duty hex drive (1/2") enables high-torque installation with standard tools, speeding up assembly processes.
- Rockwell C37 hardness maintains thread integrity and prevents stripping during repeated use.
- Full regulatory compliance with ASTM F835, RoHS 3, and REACH ensures safety and environmental responsibility.
Professional Applications & Engineering Value
Engineered for demanding industrial and construction applications, these black-oxide alloy steel flat head screws solve critical fastening challenges where corrosion resistance and high tensile strength are paramount. The 3/4"-10 UNC coarse thread design provides excellent grip in wood, metal, and composite materials, while the partially threaded configuration prevents joint loosening under vibration. The 82° countersink angle ensures flush mounting in structural steel connections, machinery frames, and heavy equipment assembly. With ASTM F835 compliance, these hex drive screws deliver consistent performance in load-bearing applications where failure is not an option.
Specification Summary & Compliance
This 3/4"-10 UNC flat head screw features precision Class 3A thread fit with coarse thread spacing and 2" minimum thread length. Manufactured to ASTM F835 specifications with Rockwell C37 hardness and 130,000 psi tensile strength. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Dimensions include 5" length, 1.438" head diameter, and 1/2" hex drive size in inch system measurements.
