Value Collection B7SN1250775UP Threaded Stud Nut 1-1/4-8 Steel

Product Description

The VALUE COLLECTION B7SN1250775UP is a fully threaded stud and nut assembly manufactured from alloy steel to ASTM A193 Grade B7 specifications. Each stud measures 1-1/4-8 thread size and 7.75 inches in length with an uncoated finish. The 7B class of fit provides a controlled tolerance suitable for high-strength bolted connections in pressure vessels, flanges, pipe fittings, and structural applications. This package includes four studs and eight nuts, ready for installation by licensed plumbers, pipefitters, millwrights, or mechanical contractors working on industrial or commercial assemblies.

These Grade B7 threaded studs are commonly used in ASME flange connections, valve assemblies, heat exchangers, and pressure vessel closures where high tensile strength and reliable clamping load are required. The fully threaded design allows nut positioning anywhere along the stud length, making them well-suited for varied flange thicknesses. They are a standard fastener choice in commercial and industrial plumbing, petrochemical, and HVAC equipment installations requiring ASTM A193 compliance.

Key Features

• ASTM A193 Grade B7 alloy steel construction for high-strength bolted joint applications
• 1-1/4-8 UNC thread size with 7B class of fit for controlled tolerance assembly
• 7.75-inch fully threaded length allows flexible nut positioning along entire stud body
• Uncoated finish suitable for use with compatible thread lubricants or coatings applied at installation
• Package includes four studs and eight nuts for immediate assembly use

Compatibility

Designed for use in ASME and ASTM A193-compliant bolted flange connections and pressure vessel assemblies requiring 1-1/4-8 Grade B7 threaded fasteners.

Installation Notes

Installation should be performed by a qualified pipefitter, millwright, or licensed mechanical contractor familiar with applicable ASME or ANSI flange standards. Depressurize and isolate any connected system before disassembling or assembling flanged joints. Apply an appropriate anti-seize compound or thread lubricant to stud threads before torquing nuts to specification per the applicable flange standard. Do not reuse studs that show signs of thread damage, stretching, or corrosion.