Value Collection 32278 Hex Jam Nut 3/4-10 Unc Steel

Product Description

The VALUE COLLECTION 32278 is a 3/4-10 UNC hex jam nut manufactured from steel with a zinc-plated finish. Jam nuts are thin profile nuts used to lock a standard hex nut in place or to secure threaded rod and fastener assemblies where low-profile hardware is required. This nut features right-hand threading conforming to the Unified National Coarse (UNC) standard. At 1-1/8 inches across the flats and 0.4219 inches in height, it fits standard 3/4-inch threaded fastener applications. Installation requires a standard 1-1/8 inch wrench. Sold in packages of 25.

This hex jam nut is suited for general mechanical assembly, maintenance, and repair work across industrial, commercial, and light construction applications. It is commonly used to lock threaded connections on bolts, studs, and threaded rod in equipment frames, pipe supports, and structural assemblies. The zinc-plated finish provides a basic level of corrosion resistance appropriate for indoor and light-duty outdoor environments. Tradespeople in HVAC, plumbing, electrical, and general mechanical service regularly use jam nuts of this size when securing mounting hardware and vibration-sensitive fastener assemblies.

Key Features

• 3/4-10 UNC right-hand thread for compatibility with standard coarse-thread fasteners
• Low-profile jam nut design for locking applications and tight-clearance assemblies
• Steel construction with zinc-plated finish for basic corrosion resistance
• 1-1/8 inches across flats — fits standard open-end or box wrench
• 0.4219 inches height provides a thin locking profile
• Packaged in quantities of 25 for service stock and shop use

Compatibility

Designed for use with 3/4-10 UNC threaded fasteners including bolts, studs, and threaded rod conforming to the Unified National Coarse thread standard.

Installation Notes

Installation is performed by threading the jam nut onto a 3/4-10 UNC threaded fastener and tightening it against a standard hex nut or mating surface using a 1-1/8 inch wrench. Always ensure the fastener threads are clean and free of debris before installation. Do not use impact tools to seat jam nuts, as the thin profile is susceptible to deformation under excessive torque. Follow applicable mechanical and structural codes for the specific assembly being serviced.