Value Collection 330390PR Hex Jam Nut 3/8-24 Unf Grade 2

Product Description

The VALUE COLLECTION 330390PR is a 3/8-24 UNF hex jam nut manufactured from Grade 2 steel with a zinc-plated finish. Jam nuts are thin-profile hex nuts used to lock a standard nut in place or to secure threaded assemblies where axial space is limited. This nut features a right-hand thread, measures 9/16 inch across the flats, and has a height of 0.2188 inches. The zinc plating provides a basic level of corrosion resistance for general-purpose indoor and sheltered outdoor applications. Mechanical contractors, pipefitters, and equipment assemblers regularly use jam nuts in fastener stack-ups and anti-vibration configurations.

This jam nut is suited for general mechanical assembly work across a wide range of trade applications including HVAC equipment mounting, plumbing fixture support, electrical enclosure assembly, and structural bracketing. The 3/8-24 UNF (Unified Fine Thread) designation makes it compatible with fine-thread fastener systems where greater thread engagement and load-bearing precision are required compared to coarse-thread equivalents. Sold individually with a minimum order quantity of 100 pieces.

Key Features

• 3/8-24 UNF right-hand thread for fine-thread fastener systems
• Grade 2 steel construction for general-purpose mechanical fastening
• Zinc-plated finish for basic corrosion resistance in sheltered environments
• Low-profile jam nut design at 0.2188 inches height for space-constrained assemblies
• 9/16 inch across flats — fits standard 9/16 inch wrench or socket
• Does not meet military specifications — for commercial and trade applications

Compatibility

Designed for use with 3/8-24 UNF threaded fasteners in general commercial and trade mechanical assemblies. Confirm thread standard and grade requirements against your application before installation.

Installation Notes

Jam nuts are typically installed by a mechanic or trade professional using a standard 9/16 inch open-end wrench or socket. The jam nut is threaded onto the bolt or stud and tightened against an adjacent nut or surface to prevent loosening. Always ensure mating threads are clean and free of debris before assembly. Do not use zinc-plated hardware in environments with continuous moisture exposure or chemical contact without verifying corrosion suitability.