S-94705A498 7/8"-9 x 2 1/2" ASTM A193 Steel Heavy Hex Head Screws for High-Pressure Applications
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 tensile strength of 125,000 psi provides reliable performance in high-stress industrial applications
- ASTM Grade B7 material certification ensures consistent quality and durability for demanding environments
- Fully threaded UNC coarse design delivers maximum grip and holding power across the entire fastener length
- Class 2A thread fit guarantees proper engagement while maintaining easy assembly and disassembly
- Rockwell C35 hardness rating offers superior resistance to wear and deformation under heavy loads
- External hex drive configuration enables secure tool engagement and high torque application capability
- ASTM A193 compliance verifies material and manufacturing standards for critical temperature and pressure applications
Professional Applications & Engineering Value
This high-strength hex head screw addresses critical engineering challenges in industrial settings where fastener failure is not an option. The ASTM Grade B7 steel construction combined with UNC coarse threading provides exceptional resistance to vibration loosening and mechanical stress, making it ideal for pressure vessels, structural connections, and heavy machinery assemblies. The fully threaded design ensures uniform load distribution along the entire fastener length, while the external hex drive accommodates high-torque installation requirements. Engineered to withstand extreme conditions, these industrial fasteners deliver reliable performance in applications demanding both mechanical strength and thermal stability, from manufacturing equipment to energy sector installations.
Specification Summary & Compliance
This fastener features 7/8"-9 UNC coarse threads with Class 2A thread fit for standard industrial applications. The 2 1/2" length and external hex drive (1 7/16" head width) provide optimal installation characteristics. Manufactured to ASTM A193 specifications with Grade B7 material certification, this screw meets rigorous standards for high-temperature and high-pressure service. The inch system measurement ensures compatibility with North American industrial equipment and replacement part requirements.
