S-92865A759 9/16"-12 x 1 1/4" 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 under high-stress conditions, reducing the risk of fastener failure.
• Superior corrosion resistance with zinc plating protects against rust and environmental damage, extending service life in demanding applications.
• High hardness rating (Rockwell C25) provides excellent wear resistance and durability, maintaining thread integrity through repeated use.
• Coarse UNC thread design offers faster installation and superior holding power in various materials, improving assembly efficiency.
• Full threading along the entire length allows for maximum adjustability and secure fastening across different material thicknesses.
• Precise Class 2A thread fit ensures smooth engagement with mating components while maintaining proper clearance for reliable connections.
• External hex drive design enables high-torque installation with standard tools, facilitating quick and secure fastening operations.

Professional Applications & Engineering Value

This Grade 5 hex head screw delivers critical engineering solutions for industrial applications requiring high-strength fastening. The zinc plated steel construction provides essential corrosion protection for outdoor equipment, structural frameworks, and machinery exposed to harsh environments. The 9/16"-12 UNC coarse thread configuration ensures rapid installation and superior resistance to vibration loosening in construction, manufacturing, and heavy equipment applications. With full threading along its 1 1/4" length, this fastener offers versatile clamping capability across various material thicknesses, while the external hex drive accommodates high-torque applications using standard wrenches. This combination of material properties and thread design addresses common industrial challenges including vibration resistance, corrosion protection, and installation efficiency.

Specification Summary & Compliance

This hex head screw features precision Class 2A thread fit with 9/16"-12 UNC coarse threads and right-hand thread direction. Manufacturing complies with ASME B18.2.1 and SAE J429 Grade 5 specifications, ensuring dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting current industry standards for hazardous substance restrictions.