S-91263A601 1/2"-13 x 1" 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
- Superior corrosion resistance with zinc plating for extended service life in harsh industrial environments
- Exceptional tensile strength of 130,000 psi ensures reliable performance under heavy loads and vibration
- Precision Class 3A thread fit provides secure, accurate fastening with minimal risk of cross-threading
- 82° countersink angle allows for flush mounting in standard applications for clean, professional finishes
- Rockwell C39 hardness rating maintains thread integrity and prevents stripping during installation
- 5/16" hex drive enables high-torque installation with common industrial tools for efficient assembly
- Full threading along the entire 1" length maximizes grip strength and load distribution
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these zinc-plated alloy steel flat head screws combine corrosion resistance with high tensile strength to solve critical fastening challenges. The 1/2"-13 UNC coarse thread configuration ensures rapid installation and superior holding power in metal assemblies, machinery, and structural components. The 82° countersink angle and flat head design provide flush surface mounting, eliminating protrusions that could interfere with moving parts or create safety hazards. With Class 3A thread fit precision, these fully threaded screws maintain consistent clamping force even under extreme vibration and load conditions, making them ideal for automotive, construction, and heavy equipment applications where reliability is paramount.
Specification Summary & Compliance
These flat head screws feature precise 1/2"-13 UNC coarse threads with Class 3A thread fit tolerance for optimal engagement. Manufacturing complies with ASTM F835 specifications for mechanical properties and dimensional accuracy. The products are RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting international environmental and safety standards for industrial use.
