S-91253A851 3/4"-10 x 4" 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 load-bearing capacity with 130,000 psi tensile strength for reliable performance in high-stress applications
- Superior corrosion resistance due to black-oxide coating on alloy steel, extending service life in demanding environments
- Precise thread engagement with Class 3A fit ensuring secure fastening and vibration resistance
- Optimized drive efficiency through 1/2" hex drive design for easy installation with standard tools
- Enhanced flush mounting with 82° countersink angle and flat head profile for smooth surface finishes
- Reduced cross-threading risk with UNC coarse threading facilitating quicker assembly in industrial settings
- Regulatory compliance assurance meeting ASTM F835, RoHS 3, and REACH standards for global industrial use
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these 3/4"-10 UNC flat head screws deliver critical solutions where high tensile strength and vibration resistance are paramount. The black-oxide alloy steel construction provides superior protection against corrosion in manufacturing environments, while the Class 3A thread fit ensures precise mating with components in machinery assembly, structural frameworks, and equipment maintenance. The 82° countersink angle and flat head design enable flush mounting in metal fabrication and construction projects, eliminating protrusions that could interfere with operational safety. With partial threading offering optimal clamp load distribution, these industrial screws effectively address common challenges of joint integrity, material fatigue, and long-term reliability in demanding heavy-duty fastening scenarios.
Specification Summary & Compliance
Manufactured to exacting standards with Class 3A thread fit precision and UNC coarse threading specifications. These flat head screws comply with ASTM F835 manufacturing requirements and maintain dimensional accuracy throughout production. The product fully meets RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) regulations for chemical safety, ensuring suitability for international industrial markets and environmentally conscious procurement programs.
