S-91263A580 3/8"-16 x 1/2" 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 holding power with 130,000 psi tensile strength and Rockwell C39 hardness for heavy-duty applications
- Precise thread engagement with Class 3A fit ensuring reliable, vibration-resistant connections
- Efficient installation with standard 82° countersink angle that sits flush for clean, professional finishes
- Quick assembly with coarse UNC threading that reduces cross-threading risks and speeds up installation
- Secure driving capability with 7/32" hex drive providing positive torque transmission without cam-out
- Full regulatory compliance meeting ASTM F835, RoHS 3, and REACH standards for global industrial use
Professional Applications & Engineering Value
These zinc-plated alloy steel flat head screws deliver critical performance in industrial settings where vibration resistance and structural integrity are paramount. The Class 3A thread fit ensures precise mating with tapped holes, eliminating play in machinery assemblies and preventing loosening under dynamic loads. The 82° countersink angle provides optimal flush mounting in steel frameworks, conveyor systems, and heavy equipment where protruding fasteners could interfere with operation. With fully threaded coarse spacing and right-hand threading, these screws offer rapid installation in production environments while maintaining the high 130,000 psi tensile strength required for structural applications. The combination of zinc plating and alloy steel construction creates a durable fastener solution that withstands harsh conditions while meeting stringent industry specifications.
Specification Summary & Compliance
Manufactured to precise UNC coarse thread standards with Class 3A thread fit for superior dimensional accuracy. These 3/8"-16 flat head screws feature a standard 82° countersink angle and are fully compliant with ASTM F835 specifications for mechanical properties. The product meets RoHS 3 (2015/863/EU) compliance for restricted substances and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and global market acceptance for industrial fastener applications.
