Value Collection 329450PS Hex Jam Nut 1/2-20 Unf Grade 2

Product Description

The VALUE COLLECTION 329450PS is a 1/2-20 UNF hex jam nut manufactured from Grade 2 steel with a bright, uncoated finish. This low-profile fastener measures 5/16 inches in height and 3/4 inches across the flats, making it suited for applications where a standard full-height hex nut would interfere with adjacent hardware. The right-hand thread pattern follows UNF (Unified National Fine) standards. Jam nuts are commonly used to lock a standard nut in position or to secure a threaded rod, stud, or adjustment mechanism against unwanted rotation. Installation is performed by plumbers, pipefitters, HVAC technicians, electricians, and general mechanical trades as part of routine fastener work.

This jam nut is appropriate for light-to-medium duty mechanical assemblies where Grade 2 steel meets the load requirements. Typical applications include equipment mounting, threaded rod assemblies, control linkages, and locknut configurations on 1/2-20 threaded fasteners. The uncoated bright finish is suitable for indoor and dry-environment use. This part does not meet military fastener specifications and is intended for standard commercial and industrial assembly applications.

Key Features

• Low-profile jam nut profile at 5/16 inches height for space-constrained assemblies
• 1/2-20 UNF right-hand thread for compatibility with fine-thread fastener systems
• Grade 2 steel construction for standard commercial load applications
• 3/4 inches across flats fits standard 3/4-inch open-end or combination wrenches
• Bright, uncoated finish suitable for dry indoor environments

Compatibility

Designed for use with 1/2-20 UNF threaded fasteners in standard commercial and industrial mechanical assemblies. Does not meet military fastener specifications.

Installation Notes

Install using a standard 3/4-inch open-end, box, or combination wrench. When used as a locking jam nut, thread the jam nut against the primary nut and tighten the two against each other while holding the primary nut stationary. De-energize or isolate any equipment before performing fastener work on live mechanical or electrical assemblies. Follow applicable codes and torque guidelines specified by the equipment manufacturer for the assembly being serviced.