S-92655A634 5/8"-11 x 4 1/4" ASTM A193 18-8 Stainless Steel Heavy Hex Head Screws for High-Pressure Applications
18-8 Stainless Steel Heavy Hex Head Screws for High-Pressure Applications
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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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
- Precision Class 2A thread fit provides smooth assembly and consistent clamping force
- Coarse UNC threading enables quick installation and superior resistance to loosening
- External hex drive design allows for high-torque application with standard tools
- Partial threading with 1½" thread length optimizes grip strength while reducing weight
- ASTM A193 Grade B8 certification guarantees material quality and manufacturing consistency
Professional Applications & Engineering Value
These 5/8"-11 UNC hex head screws deliver critical performance advantages in demanding industrial settings. The 18-8 Stainless Steel composition provides excellent resistance to corrosion and oxidation, making them ideal for chemical processing, marine applications, and food processing equipment where environmental factors degrade ordinary fasteners. The coarse thread design ensures rapid installation in structural steel, heavy machinery, and construction applications while maintaining vibration resistance. With partial threading and substantial 2¾" grip length, these screws provide optimal clamping force distribution across joined materials, preventing joint failure in high-stress assemblies. The external hex drive accommodates high torque values during installation, ensuring secure fastening in critical connections.
Specification Summary & Compliance
Manufactured to ASTM A193 Grade B8 specifications with Class 2A thread fit tolerance for precise engagement. Features UNC coarse threads (5/8"-11) with 1½" thread length and 4¼" total length. Meets material certification requirements with 75,000 psi tensile strength and Rockwell B100 hardness. Compliant with industry standards for chemical composition and mechanical properties.
