S-91263A704 12-24 x 3/4" 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 under high-stress conditions, reducing the risk of fastener failure in demanding applications.
• Superior corrosion resistance provided by the zinc-plated alloy steel construction, extending service life and maintaining integrity in harsh industrial environments.
• Precise Class 3A thread fit guarantees tight, secure fastening with minimal play, enhancing assembly accuracy and vibration resistance.
• Fully threaded design allows for maximum grip and holding power along the entire length, ideal for applications requiring uniform clamping force.
• Hex drive compatibility with a 1/8" drive size enables easy installation and removal using standard tools, improving efficiency in maintenance and assembly.
• Compliance with ASTM F835, RoHS 3, and REACH ensures adherence to strict quality and environmental standards, providing peace of mind for regulated industries.
• Coarse UNC threading facilitates quick engagement and reduced cross-threading risk, speeding up installation in time-sensitive operations.

Professional Applications & Engineering Value

These 12-24 UNC flat head screws are engineered to address critical challenges in industrial fastening, such as vibration loosening and environmental degradation. The zinc-plated alloy steel material offers excellent durability against corrosion, making them suitable for outdoor machinery, automotive assemblies, and electrical enclosures exposed to moisture. The flat head profile with an 82° countersink angle ensures a flush finish, preventing protrusions that could interfere with moving parts or safety. Combined with Rockwell C39 hardness and coarse thread spacing, these screws provide robust, long-lasting connections in high-vibration settings like manufacturing equipment and structural frameworks, reducing maintenance downtime and enhancing operational reliability.

Specification Summary & Compliance

This product adheres to precise dimensional standards, including Class 3A thread fit for tight tolerance and UNC coarse threading with a 12-24 size. 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 integrity. The manufacturing process guarantees consistent thread diameter of 0.216" and length of 3/4", supporting reliable performance in professional applications.