S-90429A134 7/16"-14 x 7/8" 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 under heavy loads and prevents fastener failure in demanding applications.
• Superior corrosion resistance from the black-oxide finish on alloy steel, extending service life and reducing maintenance needs in harsh environments.
• Precise Class 3A thread fit guarantees secure, vibration-resistant assemblies with minimal risk of loosening over time.
• Optimal flush mounting is achieved with the standard 82° countersink angle and flat head design for a smooth, professional finish.
• Robust Rockwell C39 hardness provides excellent wear resistance, maintaining thread integrity through repeated use and installation.
• Full threading along the 7/8" length offers maximum grip and adjustment flexibility in a wide range of material thicknesses.
• Broad industrial compliance with ASME B18.3 and ASTM F835 standards ensures consistent quality, interchangeability, and engineering reliability.

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, this 7/16"-14 UNC flat head screw solves critical challenges in machinery assembly, structural frameworks, and high-vibration environments. The black-oxide alloy steel construction combats corrosion, while the 130,000 psi tensile strength and Class 3A thread fit provide a secure, durable fastening solution that resists shear and tensile forces. The fully threaded design and coarse thread spacing enable quick installation and superior holding power in metals and composites. Ideal for industrial screws applications requiring flush surfaces, the 82° countersink angle ensures a seamless fit, reducing snagging and improving safety in automated systems.

Specification Summary & Compliance

This screw adheres to Class 3A dimensional tolerances for unified UNC coarse threads and is manufactured in compliance with ASME B18.3 and ASTM F835 specifications. It is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring it meets stringent environmental and safety regulations for global industrial use.