S-92865A286 5/8"-11 x 9" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 120,000 psi ensures reliable performance in heavy-load applications, reducing the risk of fastener failure.
• Superior corrosion resistance from zinc plating extends service life in harsh industrial environments, minimizing maintenance needs.
• High hardness rating (Rockwell C25) provides excellent wear resistance, maintaining thread integrity through repeated use.
• Coarse UNC threading offers faster installation and superior grip in softer materials, improving assembly efficiency.
• Full threading along the 9" length allows for maximum adjustability and secure fastening across various material thicknesses.
• Precision Class 2A thread fit ensures smooth installation with standard nuts while maintaining vibration resistance.
• External hex drive design enables high-torque application with common tools, speeding up assembly and disassembly processes.

Professional Applications & Engineering Value

These Grade 5 hex head screws deliver critical performance where structural integrity matters most. The zinc plated steel construction combats corrosion in outdoor equipment, construction frameworks, and machinery exposed to moisture. The coarse UNC thread pattern prevents cross-threading during rapid assembly while providing superior holding power in wood, soft metals, and composite materials. With full threading across the entire 9" length, these fasteners accommodate varying material thicknesses in structural steel connections, heavy equipment manufacturing, and industrial platform assembly. The external hex drive accepts standard wrenches for high-torque applications where vibration resistance and reliable clamping force are essential for long-term operational safety.

Specification Summary & Compliance

Manufactured to precise Class 2A thread fit tolerances with 5/8"-11 UNC coarse threads and right-hand orientation. These hex head screws comply with ASME B18.2.1 and SAE J429 Grade 5 specifications, ensuring dimensional accuracy and mechanical properties. The fasteners are RoHS 3 (2015/863/EU) compliant for environmental safety and manufactured under strict quality controls to maintain consistent 120,000 psi tensile strength and Rockwell C25 hardness across production batches.