S-94705A727 1/2"-13 x 2 3/4" 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 ensures reliable performance under extreme loads and prevents fastener failure in demanding applications
- ASTM Grade B7 steel construction provides superior durability and resistance to high-temperature and high-pressure environments
- Rockwell C35 hardness rating offers excellent wear resistance and maintains structural integrity through repeated use
- External hex drive design allows for secure installation with standard tools and prevents stripping during high-torque applications
- Class 2A thread fit with UNC coarse threading ensures easy assembly and disassembly while maintaining vibration resistance
- Partially threaded configuration with 1½" grip length provides optimal clamping force distribution and prevents joint loosening
- ASTM A193 certification guarantees compliance with industrial standards for high-temperature service and critical applications
Professional Applications & Engineering Value
This high-strength hex head screw delivers critical performance in heavy-duty industrial applications where reliability is paramount. The Grade B7 steel material combined with 125,000 psi tensile strength makes it ideal for pressure vessels, valve systems, and structural connections subject to extreme temperatures and mechanical stress. The UNC coarse thread pattern provides superior resistance to vibration loosening while enabling quicker installation compared to fine-thread alternatives. With partial threading and precise 1½" grip length, this fastener ensures optimal load distribution across connected components, preventing stress concentration and extending service life in critical engineering applications where failure is not an option.
Specification Summary & Compliance
This 1/2"-13 UNC hex head screw features Class 2A thread fit tolerance for reliable engagement and meets ASTM A193 specifications for high-temperature service. The fastener maintains dimensional accuracy with 2¾" total length and 1¼" thread length, manufactured to inch system standards. Compliance includes ASTM Grade B7 material requirements with Rockwell C35 hardness verification, ensuring consistent performance in industrial environments requiring certified components for pressure-containing applications.
