S-92655A416 1/2"-13 x 2 1/2" 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 from 18-8 Stainless Steel construction, ideal for harsh environments and reducing long-term replacement costs.
- High tensile strength of 75,000 psi ensures reliable performance under heavy loads and in demanding structural applications.
- Precision Class 2A thread fit guarantees easier assembly and consistent, secure fastening without cross-threading.
- Robust Rockwell B100 hardness provides excellent wear resistance and maintains thread integrity through repeated use.
- Coarse UNC threads offer faster installation and superior performance in materials where vibration resistance is critical.
- External hex drive and hex head design allows for high-torque application with standard tools, speeding up assembly and maintenance.
- ASTM A193 Grade B8 compliance assures material quality and mechanical properties for high-temperature and high-pressure service.
Professional Applications & Engineering Value
This 1/2"-13 UNC Hex Head Screw is engineered to solve critical challenges in industrial settings. The 18-8 Stainless Steel material provides superior resistance to corrosion and oxidation, making it a durable choice for chemical processing, marine, and outdoor infrastructure. The partially threaded design with a defined grip length ensures that the unthreaded shank bears the shear load, preventing joint loosening under vibration—a common failure point in machinery and structural frames. Combined with the coarse thread and external hex drive, it facilitates quick, secure installations in heavy-duty applications like pressure vessels, flanges, and construction equipment, where ASTM A193 Grade B8 certification is often mandated for safety and performance assurance.
Specification Summary & Compliance
This fastener adheres to Class 2A thread tolerances for consistent fit and is manufactured to meet ASTM A193 specifications, ensuring material traceability and performance in high-temperature service. The screw conforms to UNC (Unified Coarse) thread standards and is supplied in the inch system. It is compliant with industry regulations, including RoHS and REACH, for environmental safety.
