Value Collection B7SN1130525UP Threaded Stud Nut 1-1/8-8 Steel 4pk

Product Description

The VALUE COLLECTION B7SN1130525UP is a fully threaded stud and nut assembly designed for high-strength bolted connections in industrial and mechanical applications. Each stud measures 1-1/8-8 thread (1-1/8 inch diameter, 8 threads per inch) and 5-1/4 inches in length. The studs are manufactured to ASTM A193 Grade B7 specification, a widely recognized standard for high-strength alloy steel fasteners used in pressure and temperature service. The uncoated steel finish is standard for environments where a secondary coating or lubricant will be applied at installation. Each package contains 4 studs and 8 nuts, providing a complete assembly set per fastener.

These Grade B7 threaded studs are commonly used in flange connections, pressure vessel assemblies, pipe flanges, heat exchangers, and structural bolting where elevated tensile strength and reliable clamping force are required. The 7B class of fit provides a standard tolerance for nut engagement, suitable for typical industrial bolting applications. Installation is performed by millwrights, pipefitters, and mechanical contractors working to ASME or ASTM fastener specifications.

Key Features

• ASTM A193 Grade B7 alloy steel construction for high tensile strength
• 1-1/8-8 thread size with 7B class of fit for standard industrial tolerance
• 5-1/4 inch overall stud length suits deep flange and pressure vessel connections
• Uncoated finish ready for field-applied lubricants or coatings
• Each package includes 4 studs and 8 nuts for complete fastener sets

Compatibility

Designed as a general-purpose replacement or new-installation fastener for industrial flange, pressure vessel, and structural bolting applications requiring ASTM A193 Grade B7 fully threaded studs with nuts.

Installation Notes

Installation is typically performed by licensed pipefitters, millwrights, or mechanical contractors. Follow applicable ASME B16.5 flange bolting procedures and torque sequences as specified by the system designer or engineering documentation. Ensure mating surfaces are clean and free of debris before assembly. Do not use impact tools to final-torque high-strength studs without verified torque confirmation.