S-92655A669 7/8"-9 x 2 1/2" ASTM A193 18-8 Stainless Steel Heavy Hex Head Screws for High-Pressure Applications

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments
• High tensile strength of 75,000 psi ensures reliable performance under heavy loads and vibration
• Rockwell B96 hardness provides superior wear resistance and durability for long service life
• Class 2A thread fit offers optimal assembly clearance while maintaining secure fastening
• External hex drive design enables easy installation with standard tools and high torque application
• ASTM A193 Grade B8 certification guarantees consistent quality and material integrity
• Partially threaded configuration allows for precise clamping force control in structural applications

Professional Applications & Engineering Value

This 7/8"-9 UNC hex head screw delivers critical performance advantages in demanding industrial settings where corrosion resistance and mechanical strength are paramount. The 18-8 stainless steel composition provides excellent protection against rust and chemical degradation, making it suitable for chemical processing, marine environments, and food processing equipment. The coarse UNC thread pattern ensures rapid assembly and reduced cross-threading risks, while the external hex drive accommodates high torque applications without stripping. With partial threading and precise Class 2A thread fit, this fastener provides optimal grip length control for structural connections, pressure vessels, and heavy machinery where vibration resistance and joint integrity are critical engineering requirements.

Specification Summary & Compliance

This hex head screw maintains Class 2A thread fit tolerance per UNC standards with 7/8"-9 coarse thread specification. Manufacturing complies with ASTM A193 Grade B8 material requirements, ensuring consistent mechanical properties including 75,000 psi tensile strength and Rockwell B96 hardness. The fastener meets industry standards for inch system measurements with 2-1/2" overall length and 2" threaded portion. Compliance with ASTM A193 specification guarantees material traceability and performance reliability for critical applications.