S-91253A672 7/16"-14 x 2 1/4" ASTM F835 Alloy Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 130,000 psi ensures reliable performance in high-stress industrial applications, reducing the risk of fastener failure.
• Superior corrosion resistance from the black-oxide finish on alloy steel, extending service life in demanding environments.
• Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant connections in machinery and equipment.
• Full threading and coarse UNC pattern enable faster installation and stronger grip in coarse materials like cast iron or soft metals.
• Hex drive design with 1/4" drive size allows for high-torque application using standard tools, minimizing stripping and improving efficiency.
• 82° countersink angle and flat head profile ensure a flush, low-profile finish, ideal for applications where surface clearance is critical.
• Compliance with ASTM F835, RoHS 3, and REACH guarantees adherence to industry safety and environmental standards for global supply chain compatibility.

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these 7/16"-14 UNC flat head screws address common challenges like vibration loosening and material fatigue. The black-oxide alloy steel construction provides enhanced durability against wear and mild corrosion, making them suitable for automotive assemblies, construction machinery, and metal fabrication. The coarse thread design ensures quick, secure fastening in softer substrates, while the hex drive facilitates easy installation with standard wrenches, reducing assembly time. With a fully threaded shank and 82° countersink, they deliver consistent clamping force and a smooth surface finish, preventing snagging in moving parts. Ideal for high-stress environments, these screws offer reliable performance where precision and longevity are paramount.

Specification Summary & Compliance

This product meets precise dimensional standards, including Class 3A thread fit for tight tolerances and UNC coarse threading with a size of 7/16"-14. Manufacturing adheres to ASTM F835 specifications, ensuring consistent quality and performance. Compliance is verified with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted substances for safe use in various industries.