Midland Industries 24003 Long Hex Nut 1/4 in Compression Brass

Product Description

The MIDLAND INDUSTRIES 24003 is a long hex nut designed for 1/4-inch compression fittings in plumbing, HVAC, and refrigeration tubing systems. Machined from brass, this nut threads onto compression fitting bodies to create a secure, leak-resistant seal without soldering or special tooling. At 3/4 inch in length with a 1/2-inch hex profile and a 7/16-24 thread size, it provides extra thread engagement compared to standard short hex nuts, which improves pull-out resistance in vibration-prone or high-cycle applications. Rated to 300 psi and a temperature range of -65 to 250 degrees F, it suits a wide range of service conditions encountered in residential and light commercial mechanical work.

This compression nut is used wherever a tubing connection requires a removable, re-tightened joint. Typical applications include refrigerant line connections, instrument tubing, fuel gas distribution, and water supply lines in both residential and commercial settings. It is compatible with brass, copper, aluminum, and thermoplastic tubing, making it a versatile choice for plumbers, HVAC technicians, and gas fitters working across multiple tubing materials on a single job.

Key Features

• Long-body design with 3/4-inch length for increased thread engagement and pull-out strength
• 1/2-inch hex profile for standard open-end or adjustable wrench installation
• 7/16-24 thread size for 1/4-inch compression fitting compatibility
• Rated to 300 psi working pressure
• Operating temperature range of -65 to 250 degrees F
• Brass construction resists corrosion in wet and chemically active environments

Compatibility

Designed for use with brass, copper, aluminum, and thermoplastic tubing in 1/4-inch compression fitting assemblies.

Installation Notes

Installation is typically performed by a licensed plumber, HVAC technician, or gas fitter. Shut off the supply line and relieve system pressure before disassembling any compression fitting. Thread the nut onto the fitting body by hand first, then snug with an open-end or adjustable wrench - avoid over-tightening, which can crack ferrules or damage thermoplastic tubing. Verify local code requirements, including applicable sections of the IPC or IFGC, before installing in fuel gas or potable water service.