S-94705A754 5/8"-11 x 6" 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 in high-stress industrial applications
• ASTM Grade B7 steel construction provides superior durability and resistance to heavy loads and harsh environments
• Rockwell C35 hardness rating offers excellent wear resistance and long-term structural integrity
• Class 2A thread fit with UNC coarse spacing delivers secure, vibration-resistant connections while allowing for easier assembly
• Partially threaded design combines the clamping force of threaded sections with the shear strength of unthreaded shanks
• External hex drive with 1 1/16" head width enables high-torque installation using standard tools for efficient maintenance
• ASTM A193 compliance guarantees material quality and performance consistency for critical temperature and pressure applications

Professional Applications & Engineering Value

This 5/8"-11 UNC Grade B7 steel hex head screw addresses critical engineering challenges in demanding industrial environments. The ASTM A193 compliant material composition, combined with Rockwell C35 hardness, provides exceptional resistance to stress relaxation and creep under sustained loads. The partially threaded configuration with coarse UNC spacing optimizes both clamping force distribution and vibration resistance, making it ideal for pressure vessel assemblies, structural steel connections, and heavy machinery where 125,000 psi tensile strength is essential. The external hex drive design ensures reliable torque transmission during installation and maintenance operations in confined spaces common to industrial and construction applications.

Specification Summary & Compliance

Manufactured to precise inch system dimensions including 5/8"-11 UNC thread size with Class 2A thread fit tolerance for consistent engagement. Features right-hand thread direction with coarse thread spacing and 1½" thread length on a 6" overall fastener. Complies with ASTM A193 specification for high-temperature service and meets industry standards for material composition and mechanical properties. The Grade B7 classification ensures consistent performance in pressure-containing applications requiring reliable tensile strength and dimensional stability.