S-94705A818 1 1/8"-8 x 5" ASTM A193 Steel Heavy Hex Head Screws for High-Pressure Applications
Steel Heavy Hex Head Screws for High-Pressure Applications
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Exceptional tensile strength of 125,000 psi ensures reliable performance under extreme loads and pressures.
- High hardness rating of Rockwell C35 provides superior resistance to wear and deformation in demanding environments.
- Partially threaded design allows for precise clamping force control and secure fastening in heavy-duty assemblies.
- UN fine thread with Class 2A fit delivers smooth engagement, reduced vibration loosening, and consistent torque application.
- External hex drive and hex head facilitate easy installation and removal with standard tools, improving assembly efficiency.
- ASTM A193 and Grade B7 compliance guarantees material quality and performance consistency for critical industrial applications.
- Robust 5-inch length with 2 1/2-inch thread offers versatility for thick-section connections and high-stress joints.
Professional Applications & Engineering Value
This 1 1/8"-8 hex head screw is engineered to address critical challenges in high-pressure and high-temperature environments, such as pressure vessels, valve assemblies, and structural supports. Made from ASTM Grade B7 steel, it combines high tensile strength and Rockwell C35 hardness to resist fatigue, corrosion, and mechanical stress. The UN fine thread and Class 2A thread fit ensure precise alignment and secure fastening, minimizing the risk of thread stripping or loosening under vibration. Its partially threaded configuration allows the unthreaded shank to bear shear loads effectively, making it ideal for heavy-duty industrial applications where reliability and durability are paramount.
Specification Summary & Compliance
This screw adheres to Class 2A thread fit tolerances for consistent engagement and meets ASTM A193 specifications for high-temperature service. It conforms to ASTM Grade B7 material standards, ensuring compliance with industry requirements for mechanical properties and performance. The product is manufactured to support applications requiring 125,000 psi tensile strength and is suitable for use in regulated environments, with material traceability and quality assurance in line with common industrial norms.
