S-91253A955 5/8"-11 x 10" 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 vibrations in demanding industrial environments.
• Class 3A thread fit provides superior precision and tighter tolerances, reducing the risk of loosening and improving assembly integrity.
• Alloy steel construction with Rockwell C37 hardness offers excellent wear resistance and durability, extending service life in high-stress applications.
• Partially threaded design with 5/8"-11 UNC coarse threads allows for faster installation and better grip in softer materials, saving time on the job site.
• 82° countersink angle and flat head profile enable a flush finish, minimizing protrusion and enhancing safety in machinery and structural assemblies.
• 3/8" hex drive facilitates easy installation and removal with standard tools, improving efficiency and reducing labor costs.
• Compliance with ASTM F835, RoHS 3, and REACH ensures environmental safety and meets rigorous industry standards for quality and reliability.

Professional Applications & Engineering Value

Engineered for heavy-duty industrial use, this 5/8"-11 UNC flat head screw addresses common challenges in construction, machinery, and equipment assembly. The alloy steel material, combined with a Rockwell C37 hardness rating, provides superior resistance to shear and tensile forces, preventing failure in high-vibration environments. Its coarse thread design and partial threading enhance grip in materials like wood and metal, reducing the risk of stripping and ensuring secure fastening. The 82° countersink angle allows for a seamless fit, eliminating snag hazards and improving aerodynamic profiles in automotive or aerospace applications. Ideal for industrial screws requiring ASTM F835 compliance, this product delivers consistent performance, minimizing downtime and maintenance costs in critical operations.

Specification Summary & Compliance

This product adheres to precise dimensional standards, including a Class 3A thread fit for accurate engagement and UNC coarse threads with a diameter of 0.625". It meets ASTM F835 specifications for mechanical properties and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability in global supply chains.