S-91253A675 7/16"-14 x 1 3/4" 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 tensile strength (130,000 psi) for reliable performance in high-stress industrial applications
- Superior corrosion resistance through black-oxide coating on alloy steel, extending service life in demanding environments
- Precision Class 3A thread fit ensures secure fastening with minimal vibration loosening in machinery assemblies
- 82° countersink angle design provides flush mounting for cleaner aesthetics and reduced snag hazards
- Hex drive compatibility (1/4") allows for high-torque installation with standard industrial tools
- Full threading coverage maximizes grip strength across the entire 1 3/4" length for superior load distribution
- Regulatory compliance with ASTM F835, RoHS 3, and REACH standards guarantees material safety and quality consistency
Professional Applications & Engineering Value
These 7/16"-14 UNC flat head screws deliver critical engineering solutions where high tensile strength and corrosion resistance are paramount. The black-oxide alloy steel construction combined with Class 3A thread precision addresses common industrial challenges like vibration-induced loosening in heavy machinery, automotive assemblies, and structural frameworks. The 82° countersink angle enables seamless flush mounting in precision equipment while the coarse UNC threading provides rapid installation in production environments. Engineered for hex drive systems, these screws maintain integrity under high torque applications, making them ideal for maintenance-critical operations where fastener reliability directly impacts operational uptime.
Specification Summary & Compliance
Manufactured to Class 3A thread tolerances with UNC coarse threading (7/16"-14) and right-hand thread direction. Complies with ASTM F835 manufacturing specifications and maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The Rockwell C39 hardness rating ensures consistent performance across industrial temperature ranges and loading conditions.
