S-92790A439 3/4"-10 x 4" ASTM A193 Super-Corrosion-Resistant 316 Stainless Steel Heavy Hex Head Screws for High-Pressure Applications

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 316 Stainless Steel construction, ideal for harsh chemical and marine environments
• High tensile strength of 75,000 psi ensures reliable performance under heavy loads and in high-stress applications
• Superior thread engagement with Class 2A thread fit provides consistent clamping force and vibration resistance
• Optimized load distribution through partially threaded design with 2 1/4" grip length for enhanced joint stability
• Easy installation and removal with external hex drive and 1 1/4" head width for standard wrench compatibility
• Industry-standard compliance with ASTM A193 Grade B8M certification for guaranteed material and manufacturing quality
• Durable mechanical properties with Rockwell B96 hardness maintaining structural integrity under repeated stress

Professional Applications & Engineering Value

This heavy-duty hex head screw delivers critical performance in demanding industrial applications where corrosion resistance and structural integrity are paramount. The 316 Stainless Steel composition provides superior protection against chloride-induced stress corrosion cracking, making it ideal for chemical processing, marine equipment, and offshore installations. The UNC coarse thread configuration ensures rapid assembly in thick materials and structural steel connections, while the partially threaded design concentrates clamping force precisely where needed. With ASTM A193 Grade B8M certification, this fastener meets rigorous pressure vessel and high-temperature service requirements, providing engineers with verified reliability for critical bolted joints in piping systems, valve assemblies, and structural frameworks where failure is not an option.

Specification Summary & Compliance

This 3/4"-10 UNC hex head screw features precise Class 2A thread fit tolerances ensuring consistent engagement and proper clearances. Manufacturing complies with ASTM A193 specification for high-temperature service alloy steel bolting materials. The fastener maintains dimensional accuracy per inch system standards with 4" total length, 1 3/4" thread length, and coarse thread spacing for optimal performance. Material certification includes compliance with industry standards for chemical composition and mechanical properties, providing traceability and quality assurance for industrial procurement and engineering specifications.