S-91253A932 1"-8 x 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 in high-stress applications, minimizing the risk of fastener failure.
• Superior corrosion resistance from the Black-Oxide finish on Alloy Steel, extending the screw's service life in demanding industrial environments.
• Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant assemblies, reducing maintenance needs.
• Coarse 1"-8 UNC threading allows for faster installation and better performance in softer materials or where debris is present.
• 82° countersink angle with a standard flat head profile enables a flush, clean finish, ideal for applications where protrusion is a concern.
• Heavy-duty 5/8" hex drive offers high torque capability for easy installation and removal with standard tools, improving assembly efficiency.
• Compliance with ASTM F835, RoHS 3, and REACH ensures material quality and environmental safety, meeting strict industrial and regulatory standards.

Professional Applications & Engineering Value

Engineered for heavy-duty industrial fastening, this Black-Oxide Alloy Steel flat head screw addresses critical challenges in construction, machinery, and structural assemblies. The partially threaded design and coarse UNC threads provide excellent grip and resistance to loosening under vibration, a common issue in dynamic environments. With a Rockwell C37 hardness and high tensile strength, it withstands extreme loads without deformation, ensuring long-term reliability. The hex drive and standardized 82° countersink facilitate quick, flush installations, reducing labor time and enhancing aesthetic integration in metal frameworks and equipment. Ideal for applications requiring robust, ASTM F835 compliant fasteners that meet rigorous safety and performance criteria.

Specification Summary & Compliance

This screw features precise Class 3A thread fit and 1"-8 UNC coarse threads for accurate engagement, manufactured in accordance with ASTM F835 specifications. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity. Dimensions include an 8" length, 1.938" head diameter, and 5/8" hex drive, supporting consistent performance in industrial settings.