Merit Brass X117A-06 Brass Square Head Plug 3/8 in

Product Description

The MERIT BRASS X117A-06 is a brass square head pipe plug designed to seal threaded pipe openings in fluid and gas distribution systems. It features male NPT (MNPT) external threads that engage female NPT (FNPT) port openings, providing a secure, leak-resistant mechanical seal. Rated at 125 psi, this plug is suitable for low- to medium-pressure plumbing, HVAC hydronic, and general industrial piping applications. The square head profile accepts a standard wrench for installation and removal. At 3/8 inch fitting size and 0.06 pounds, it is a compact, all-brass construction component appropriate for licensed plumbers, pipefitters, and HVAC technicians working on threaded pipe systems.

This plug is commonly used to cap unused branch outlets, test ports, or service openings in residential and light commercial plumbing and heating systems. Typical applications include capping off tees, manifold ports, and distribution headers where a threaded brass closure is required. The 3/8 inch MNPT thread size fits standard NPT-threaded female ports of the same nominal size. It is sold individually per package, with a minimum order quantity of 6 units, making it well-suited for stocking on service vehicles or in shop inventory.

Key Features

• Square head design allows wrench-tightening for secure installation and easy field removal
• 3/8 inch MNPT threaded connection engages standard FNPT female ports
• Class 125 pressure rating at 125 psi for low- to medium-pressure service
• All-brass construction provides corrosion resistance in water and compatible fluid systems
• Compact and lightweight at 0.06 pounds for easy handling and inventory stocking

Compatibility

Designed as an OEM-style threaded brass pipe plug for use in standard NPT-threaded plumbing, HVAC hydronic, and general piping systems requiring a 3/8 inch Class 125 closure fitting.

Installation Notes

Installation is performed by licensed plumbers or pipefitters working on threaded pipe systems. Shut off system pressure and depressurize the line before installing or removing any threaded plug. Apply appropriate thread sealant or PTFE tape to the MNPT threads per the applicable plumbing code, such as the IPC or IFGC, before engagement. Do not overtighten; use a properly sized wrench on the square head to achieve a firm, leak-free fit without stressing the fitting.