Value Collection 329190BR Hex Jam Nut 3/4-10 Unc Grade 2

Product Description

The VALUE COLLECTION 329190BR is a 3/4-10 UNC hex jam nut made from Grade 2 steel with a bright uncoated finish. Jam nuts are thinner than standard hex nuts and are used primarily as locknuts to secure a standard nut in position or to fasten in tight axial spaces. This nut measures 1-1/8 inches across flats and 0.4219 inches in height, with a right-hand thread direction conforming to UNC standards. It is a general-purpose fastener installed by mechanics, pipefitters, millwrights, and general contractors across a wide range of commercial and industrial applications.

This jam nut is suited for general fastening applications in light to moderate load environments where Grade 2 hardware meets the structural requirement. Typical use cases include equipment assembly, duct support systems, structural framing fixtures, and mechanical locking applications. The uncoated bright finish is appropriate for interior or protected installations where corrosion exposure is minimal. This part does not meet military specifications.

Key Features

• Jam nut profile at 0.4219 inches height for low-clearance and locking applications
• 3/4-10 UNC right-hand thread for broad hardware compatibility
• Grade 2 steel construction for general-purpose fastening duty
• 1-1/8 inches across flats — fits standard 1-1/8-inch wrenches and sockets
• Bright uncoated finish for use in dry or protected environments

Compatibility

Designed as a general-purpose 3/4-10 UNC jam nut compatible with any Grade 2 or higher 3/4-10 UNC threaded rod, bolt, or stud requiring a standard right-hand thread locking nut.

Installation Notes

Install using a 1-1/8-inch open-end or box wrench. When used as a locknut, thread the jam nut against a standard hex nut and tighten the two nuts against each other to secure the assembly. Power down or de-energize any associated equipment before working on fastened assemblies in mechanical or electrical panels. Follow applicable mechanical codes and torque recommendations for the specific Grade 2 hardware assembly.