S-94705A640 1"-8 x 5" ASTM A193 Steel Heavy Hex Head Screws for High-Pressure Applications

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 125,000 psi tensile strength for reliable performance in high-stress applications
• Superior material durability through ASTM Grade B7 steel construction resistant to deformation and fatigue
• Optimized thread engagement with UNC coarse threading and Class 2A fit ensuring secure fastening and vibration resistance
• Enhanced installation efficiency featuring external hex drive and 1 5/8" head width for superior torque application
• Precision engineering compliance meeting ASTM A193 specifications for consistent quality and industrial reliability
• Versatile partial threading design with 2 1/4" threaded portion and 2 3/4" grip length for flexible application requirements
• Long-term performance assurance backed by Rockwell C35 hardness for maintained integrity under repeated stress cycles

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these Grade B7 hex head screws deliver critical performance where failure is not an option. The ASTM A193 compliant steel construction provides exceptional resistance to creep and relaxation under sustained loads, making them ideal for pressure vessel assemblies, structural connections, and heavy machinery. The 1"-8 UNC coarse thread configuration ensures rapid installation while maintaining superior clamping force, significantly reducing assembly time in production environments. With partial threading and precise Class 2A fit, these fasteners eliminate thread galling issues common in high-torque applications while providing optimal stress distribution across the 2 3/4" grip length. The external hex drive design accommodates standard tools for maintenance accessibility in confined spaces.

Specification Summary & Compliance

This heavy-duty hex head screw features precision UNC coarse threading with Class 2A thread fit tolerance ensuring consistent engagement and reliable performance. Manufacturing complies with ASTM A193 specifications for high-temperature service applications, while the ASTM Grade B7 material certification guarantees chemical composition and mechanical properties. The fastener maintains dimensional accuracy with 1"-8 thread size, 5" total length, and 2 1/4" thread length for standardized compatibility across industrial systems.