Value Collection 329310BR Hex Jam Nut 1-1/2-6 Unc Grade 2

Product Description

The VALUE COLLECTION 329310BR is a heavy-duty hex jam nut threaded to a 1-1/2-6 UNC specification in Grade 2 steel with a bright, uncoated finish. Jam nuts are thinner than standard hex nuts and are used to lock a primary nut in place or to secure threaded rod and stud assemblies where axial space is limited. This nut measures 2-1/4 inches across the flats and 0.8438 inches in height. The right-hand thread direction follows standard UNC convention. Plumbers, pipefitters, millwrights, and general maintenance trades commonly use fasteners of this type in structural and mechanical assemblies.

This jam nut is suited for industrial, commercial, and trade applications where a large-diameter UNC fastener is required. Typical uses include securing threaded rod assemblies, locking against primary nuts on bolted connections, and general mechanical fabrication. The bright uncoated finish is appropriate for indoor or protected environments where corrosion exposure is minimal. Applications span HVAC equipment mounting, pipe hanger assemblies, and structural bracketing.

Key Features

• 1-1/2-6 UNC right-hand thread — standard coarse-thread pitch for large-diameter fastener applications
• Grade 2 steel construction provides adequate strength for general mechanical and structural use
• Jam nut profile at 0.8438 inches height allows use in tight axial-clearance installations
• 2-1/4 inches across flats — accepts standard open-end or combination wrenches sized for this hex dimension
• Bright uncoated finish — no additional coating that could interfere with thread engagement tolerances
• Does not meet military specifications — intended for commercial and trade applications

Compatibility

Designed for use with 1-1/2-6 UNC threaded fastener assemblies including threaded rod, bolts, and studs following UNC coarse-thread standards.

Installation Notes

Installation is performed by hand-threading the nut onto the mating fastener and tightening with an appropriate open-end or combination wrench sized for a 2-1/4-inch hex. When used as a jam nut, thread the jam nut against the primary nut and hold the primary nut stationary while torquing the jam nut into contact. Inspect mating threads for damage or contamination before assembly. Follow applicable mechanical and structural codes for fastener torque requirements based on the specific application and Grade 2 material rating.