S-92865A723 1/2"-13 x 2 3/4" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional Load-Bearing Capacity: With a tensile strength of 120,000 psi, these screws reliably handle high-stress applications, reducing the risk of fastener failure.
• Superior Corrosion Resistance: The zinc plating provides a durable protective layer, extending service life in demanding industrial environments.
li>Optimized for High-Torque Assembly: The external hex head and substantial 3/4" head width offer excellent grip for powerful wrenching and easy installation.
• Reliable, Coarse Thread Engagement: The UNC coarse threading ensures quick and secure fastening, even in softer materials or where debris is present.
• Guaranteed Dimensional Consistency: Manufactured to Class 2A thread fit and Grade 5 standards, ensuring precise, interchangeable parts and predictable performance.
• Enhanced Durability and Wear Resistance: A Rockwell C25 hardness rating means the screw is tough enough to resist deformation and wear over repeated use.
• Full-Length Threading for Maximum Grip: Being fully threaded along the 2 3/4" length provides consistent clamping force across the entire engagement area.

Professional Applications & Engineering Value

This Grade 5 Hex Head Screw is engineered to solve critical challenges in heavy-duty assembly and construction. The combination of high-strength steel and a zinc plated finish directly addresses the need for durability and corrosion resistance in machinery, structural frameworks, and outdoor equipment. The UNC coarse thread is particularly valuable in applications where speed of assembly is crucial or where fine debris could clog finer threads, ensuring reliable performance in less-than-ideal conditions. Its external hex drive design allows for high-torque installation, making it a preferred choice for applications requiring a secure, vibration-resistant connection that can be easily serviced with standard tools.

Specification Summary & Compliance

This fastener is precision-manufactured to a Class 2A thread fit for consistent assembly. It conforms to the dimensional requirements of ASME B18.2.1 and the material and mechanical property specifications of SAE J429 for Grade 5. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets the latest environmental and safety standards for industrial use.