S-92655A688 1"-8 x 1 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
- Superior load-bearing capability with 75,000 psi tensile strength for heavy-duty applications
- Reliable vibration resistance through coarse UNC threads and Class 2A fit for secure fastening
- Easy installation and removal with external hex drive and standard 1 5/8" head width
- Full-thread engagement along the 1 1/4" length for maximum grip and distribution of stress
- Consistent mechanical performance backed by ASTM A193 Grade B8 certification and Rockwell B96 hardness
- Broad compatibility with inch-system components and right-hand threading for common assembly needs
Professional Applications & Engineering Value
Engineered for demanding industrial settings, these 1"-8 UNC hex head screws provide a robust fastening solution where reliability is non-negotiable. The 18-8 stainless steel material offers excellent resistance to oxidation and chemical exposure, making them suitable for outdoor, marine, or chemical processing equipment. With coarse thread spacing and Class 2A thread fit, the screws maintain clamp force under dynamic loads and vibration, reducing the risk of loosening in machinery, structural frames, or heavy equipment assemblies. The fully threaded design ensures uniform stress distribution, while the external hex drive allows for high-torque installation with common tools, streamlining maintenance and assembly workflows in construction, manufacturing, and infrastructure projects.
Specification Summary & Compliance
This hex head screw features a 1"-8 UNC thread with Class 2A fit for precise dimensional accuracy and interchangeability. It complies with ASTM A193 Grade B8 specifications, ensuring material integrity and mechanical properties including a tensile strength of 75,000 psi and hardness of Rockwell B96. The product adheres to industry standards for inch-system fasteners and is suitable for applications requiring reliable performance under stress, with full traceability to ASTM requirements.
