S-91263A585 3/8"-16 x 1 1/4" 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 corrosion resistance with zinc plating that protects against rust in demanding industrial environments
- Superior thread engagement with Class 3A fit ensuring precise, vibration-resistant connections in critical applications
- High tensile strength rating of 130,000 psi provides reliable performance under extreme mechanical stress
- Optimized installation efficiency with hex drive design allowing high torque application without cam-out
- Perfect flush mounting with 82° countersink angle and standard flat head profile for seamless surface integration
- Enhanced durability with Rockwell C39 hardness maintaining structural integrity through repeated use
- Broad compatibility with UNC coarse threading ensuring reliable performance in various materials and applications
Professional Applications & Engineering Value
These 3/8"-16 UNC flat head screws deliver critical engineering solutions where flush surface mounting and high-strength fastening are paramount. The zinc-plated alloy steel construction provides essential corrosion protection for industrial equipment, machinery frames, and structural assemblies exposed to harsh environments. The Class 3A thread fit ensures precise engagement that resists loosening under vibration, while the hex drive design enables efficient installation in confined spaces. With 130,000 psi tensile strength and Rockwell C39 hardness, these fully threaded screws maintain clamping force in heavy-duty applications, from manufacturing fixtures to construction frameworks where reliability cannot be compromised.
Specification Summary & Compliance
Manufactured to exacting standards with Class 3A thread fit per UNC specifications, ensuring precision threading for optimal performance. These flat head screws meet ASTM F835 specifications for mechanical properties and dimensional requirements. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental responsibility and safe use in industrial applications worldwide. The 82° countersink angle and standard flat head profile provide consistent flush mounting across various materials and applications.
