S-92655A631 5/8"-11 x 2 3/4" 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
• Superior tensile strength rated at 75,000 psi for reliable performance in heavy-duty applications
• Precise thread engagement with Class 2A fit and UNC coarse threading for faster assembly and reduced cross-threading risk
• Optimized load distribution through partially threaded design with 1 1/4" grip length for enhanced joint stability
• Easy installation and removal with external hex drive and 1 1/16" head width for standard tool compatibility
• Certified material quality meeting ASTM A193 Grade B8 specifications for consistent mechanical properties
• Durable surface hardness at Rockwell B100 to resist wear and maintain fastener integrity

Professional Applications & Engineering Value

These 5/8"-11 UNC hex head screws deliver critical engineering solutions where corrosion resistance and high tensile strength are paramount. The 18-8 Stainless Steel composition provides excellent protection against rust and chemical exposure in marine, chemical processing, and outdoor infrastructure applications. The partially threaded design with coarse UNC threading ensures optimal clamping force distribution while allowing for faster installation in structural steel connections, heavy machinery assembly, and pressure vessel applications. With ASTM A193 Grade B8 certification, these fasteners maintain consistent performance under extreme temperatures and mechanical stress, making them ideal for critical bolting applications where reliability cannot be compromised.

Specification Summary & Compliance

Manufactured to precise inch system dimensions including 2 3/4" length and 5/8"-11 UNC thread size with Class 2A thread fit tolerance. Complies with ASTM A193 Grade B8 material specification for high-temperature service. Threading configuration follows UNC coarse thread standards with right-hand direction and partial threading. Meets industry standards for mechanical properties including 75,000 psi tensile strength and Rockwell B100 hardness. Suitable for applications requiring compliance with industrial fastener specifications and quality assurance protocols.