Value Collection 6SQ3/8 Square Head Plug 3/8 in 316 Ss Mnpt

Product Description

The VALUE COLLECTION 6SQ3/8 is a 3/8-inch 316 stainless steel square head plug designed to close off the end of a threaded pipe line. It uses a male NPT (MNPT) threaded connection and is rated for service up to 150 psi. The square head drive allows standard wrenches or sockets to apply adequate torque during installation and removal. Constructed from 316 stainless steel, this plug offers strong resistance to corrosion in wet, chemical, and marine environments. Plumbers, pipefitters, and industrial maintenance technicians install this type of fitting when capping an open pipe port in a pressurized system.

This square head plug is suited for use in residential and commercial plumbing, as well as industrial piping systems where pipe ports need to be sealed. Typical applications include capping unused tee or cross outlets, pressure testing setups, and system isolation points. The MNPT thread pattern conforms to standard NPT pipe thread dimensions, making it compatible with common pipe fittings in 3/8-inch configurations across a range of system types.

Key Features

• 316 stainless steel construction provides superior corrosion resistance compared to 304 SS, particularly in chloride-rich or chemical environments
• MNPT threaded end seats securely into any standard female NPT fitting or port
• Square head drive accepts standard wrenches and sockets for reliable installation torque
• Rated to 150 psi for use in low-to-moderate pressure piping applications
• Compact 3/8-inch pipe size fits a wide range of standard plumbing and industrial pipe configurations

Compatibility

Designed as an OEM-style replacement or new-installation fitting for standard 3/8-inch female NPT pipe ports in plumbing, industrial, and process piping systems.

Installation Notes

Installation should be performed by a licensed plumber or qualified pipefitter in accordance with applicable plumbing codes such as the IPC. Depressurize and isolate the pipe system completely before threading in or removing the plug. Apply an appropriate thread sealant or PTFE tape to the MNPT threads before installation to ensure a leak-free seal. Do not overtighten, as this can damage the female fitting threads.