S-94705A726 1/2"-13 x 2 1/4" ASTM A193 Steel Heavy Hex Head Screws for High-Pressure Applications

Key Features & Benefits at a Glance

• Exceptional load-bearing capability with 125,000 psi tensile strength for reliable performance in high-stress applications
• Superior hardness and durability thanks to Rockwell C35 hardness, ensuring long service life and resistance to wear
• Optimized grip and clamping force through partial threading and 1" grip length, providing secure fastening in industrial assemblies
• Precise thread engagement with Class 2A fit and coarse UNC threading, enabling quick installation and reduced cross-threading risks
• Robust external hex drive design featuring a 7/8" head width for easy tool access and high torque application
• Heavy-duty material compliance meeting ASTM A193 specifications, guaranteeing consistency for critical engineering projects
• Versatile inch-system sizing with 2 1/4" length and right-hand thread, compatible with standard industrial equipment

Professional Applications & Engineering Value

This ASTM Grade B7 hex head screw is engineered to address demanding fastening challenges in industrial settings, such as pressure vessels, structural connections, and heavy machinery. The high-strength steel construction, combined with UNC coarse threading and Class 2A thread fit, ensures reliable performance under vibration and dynamic loads, reducing the risk of loosening or failure. Its partially threaded design allows for precise clamping force distribution, making it ideal for applications where joint integrity is critical. By meeting ASTM A193 specifications, this fastener provides consistent quality and traceability, supporting compliance in sectors like oil and gas, construction, and manufacturing. The external hex drive facilitates efficient installation with common tools, minimizing downtime in maintenance and assembly operations.

Specification Summary & Compliance

This product adheres to precise dimensional standards, including Class 2A thread fit for consistent engagement and UNC coarse thread specifications. It conforms to ASTM A193 manufacturing requirements, ensuring material and performance reliability for high-temperature and high-pressure applications. The screw is supplied in inch measurements, with a thread size of 1/2"-13, length of 2 1/4", and partial threading design. Compliance with industry regulations such as RoHS and REACH is verified for environmental safety, supporting use in global engineering projects.