S-94705A627 1"-8 x 4" ASTM A193 Steel Heavy Hex Head Screws for High-Pressure Applications

Key Features & Benefits at a Glance

• Exceptional tensile strength of 125,000 PSI ensures reliable performance under extreme mechanical loads
• High-temperature and pressure resistance due to ASTM Grade B7 steel construction for demanding industrial environments
• Precision Class 2A thread fit guarantees smooth installation and secure fastening without cross-threading
• Rockwell C35 hardness provides superior wear resistance and long-term durability
• External hex drive design allows for high-torque installation using standard tools
• Partially threaded configuration optimizes grip length for secure clamping in structural applications
• Coarse UNC threading enables quick assembly and superior vibration resistance

Professional Applications & Engineering Value

Engineered for high-pressure and high-temperature applications, these Grade B7 steel hex head screws deliver critical performance in industrial fastening systems where failure is not an option. The 1"-8 UNC coarse thread configuration provides excellent vibration resistance in heavy machinery, while the partially threaded design concentrates clamping force precisely where needed. With ASTM A193 compliance, these external hex drive fasteners meet rigorous standards for pressure vessel, piping, and structural applications where 125,000 PSI tensile strength and Rockwell C35 hardness ensure long-term reliability under continuous stress and thermal cycling conditions.

Specification Summary & Compliance

Manufactured to ASTM A193 specifications with Class 2A thread fit for precision tolerance. Features 1"-8 UNC coarse thread with partial threading and 4" overall length. Complies with ASTM Grade B7 material requirements for high-strength applications. The external hex drive and right-hand thread direction ensure compatibility with standard industrial installation tools and procedures.