S-91263A145 8-32 x 1 1/2" 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 with zinc-plated alloy steel construction, extending service life in industrial environments and reducing maintenance frequency.
• Precise Class 3A thread fit provides tighter tolerances for secure fastening, minimizing loosening from vibration and ensuring consistent assembly quality.
• Convenient hex drive design with 3/32" drive size allows for efficient installation using standard tools, speeding up assembly processes.
• 82° countersink angle enables flush mounting in materials, creating smooth surfaces ideal for applications where protrusion must be avoided.
• Partially threaded shank offers optimal grip and clamping force control, preventing over-tightening and material damage.
• Compliance with major standards including ASME B18.3 and ASTM F835 guarantees consistent quality and interoperability in professional settings.

Professional Applications & Engineering Value

Engineered for industrial and mechanical assemblies, this 8-32 UNC flat head screw addresses common challenges in fastening applications where strength and precision are critical. The zinc-plated alloy steel material provides excellent durability against corrosion, making it suitable for environments exposed to moisture or chemicals. With its coarse UNC thread and Class 3A thread fit, it ensures quick installation and reliable hold in materials like metal and hardened plastics, reducing assembly time while maintaining integrity. The hex drive design facilitates easy torque application, minimizing slippage and tool wear. Ideal for machinery, automotive components, and structural frameworks, this screw delivers consistent performance where vibration resistance and long-term reliability are essential, supported by its high Rockwell C39 hardness and robust construction.

Specification Summary & Compliance

This screw features precise dimensions including a 1 1/2" length, 8-32 UNC thread size with coarse spacing, and Class 3A thread fit for tight tolerances. It meets ASME B18.3 and ASTM F835 specifications, ensuring adherence to industry standards for dimensional accuracy and performance. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming environmental and safety regulations are met for global industrial use.