Description

Description

Midland Bronze Countersunk Plug

Midland Bronze Countersunk Plugs provide a compact threaded closure for sealing compatible female NPT pipe openings in plumbing, commercial, and industrial piping systems.

Manufactured from durable domestic bronze, these plugs feature male NPT threads and a countersunk body with an internal wrench recess, allowing the plug to sit flush or nearly flush within compatible threaded openings.

Product Highlights

Domestic bronze construction
Countersunk pipe plug configuration
Male NPT threaded connection
Internal wrench recess for installation and removal
Designed for flush or low-profile installation
Precision-machined NPT threads
Excellent corrosion resistance
Provides a secure threaded pipe closure
Suitable for plumbing, commercial, and industrial systems
Available in multiple nominal pipe sizes
Manufactured by Midland Industries

Technical Specifications

Product Type	Countersunk Pipe Plug
Brand	Midland
Material	Bronze
Origin	Domestic
Connection Type	Male NPT
Thread Type	NPT
Head Style	Countersunk / Recessed
Installation Feature	Internal Wrench Recess
Primary Function	Closing and Sealing Compatible Female-Threaded Pipe Openings
Available Sizes	Multiple Nominal Pipe Sizes

Countersunk Plug Configuration

Male NPT Threads

The plug features precision-machined male NPT threads for installation into a compatible female-threaded pipe, fitting, valve, manifold, or equipment opening.

Countersunk Body

The recessed body design allows the plug to sit flush or low within the threaded opening for a compact finished installation.

Internal Drive Recess

An internal wrench recess allows installation and removal with the appropriate hex or square drive tool, depending on the specific plug size and configuration.

Construction Details

Midland Bronze Countersunk Plugs are precision-machined from durable bronze to provide dependable mechanical strength, corrosion resistance, and long service life in threaded piping systems.

The countersunk profile eliminates an external wrenching head, helping create a cleaner, lower-profile installation where protruding fittings may be undesirable.

Precision-machined male NPT threads help provide consistent engagement with compatible female-threaded components when installed using accepted piping practices.

Why Choose a Countersunk Plug?

Low-Profile Closure

Designed for flush or nearly flush installation
Minimizes external protrusion
Useful in compact assemblies
Provides a clean finished appearance
Suitable for maintenance and repair applications

Internal Wrenching Design

No external square or hex head
Uses an internal drive recess
Allows controlled tightening and removal
Helps protect surrounding components from tool contact
Convenient in confined installations

Bronze Construction

Corrosion Resistance

Bronze provides excellent resistance to corrosion and wear in compatible plumbing, commercial, and industrial piping environments.

Mechanical Durability

The bronze body provides dependable strength while maintaining the compact geometry required for a countersunk threaded plug.

NPT Threaded Connection

Male NPT

The male NPT connection installs into a compatible female NPT opening of the matching nominal pipe size.

Thread Sealing

Use PTFE tape or an approved pipe-thread sealant on the male NPT threads according to the system media, pressure, temperature, and installation requirements.

Typical Applications

Plumbing & Mechanical

Closing unused pipe openings
Valve and manifold ports
Mechanical equipment connections
Compact threaded assemblies
Maintenance and repair

Commercial & Industrial

Industrial piping systems
Utility piping
Equipment ports
General threaded closures
Applications requiring a low-profile plug

Size Selection

Midland Bronze Countersunk Plugs are available in multiple nominal pipe sizes.

Confirm the required pipe size, internal drive configuration, and female NPT mating connection before ordering.

Ask Willy: Need Help Selecting a Bronze Countersunk Plug?

Our pipe and fitting specialists can help review your nominal pipe size, female NPT mating connection, internal drive style, pressure, temperature, and application requirements before you order.

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Frequently Asked Questions

What is a countersunk plug used for?

It is used to close and seal a compatible female-threaded pipe, fitting, valve, manifold, or equipment opening while maintaining a low-profile installation.

What material is this plug made from?

It is manufactured from bronze.

Is this a domestic fitting?

Yes. The supplied product information identifies this as domestic bronze construction.

What type of connection does it use?

It uses a male NPT threaded connection.

What does countersunk mean?

Countersunk refers to the recessed head design that allows the plug to sit flush or nearly flush within the threaded opening.

How is the plug installed?

It is tightened using the appropriate internal hex or square drive tool, depending on the specific size and configuration.

Why choose a countersunk plug instead of a square head plug?

A countersunk plug provides a lower-profile installation without an external wrenching head.

Should thread sealant be used?

Use PTFE tape or an approved pipe-thread sealant on the male NPT threads according to the application requirements.

Are multiple sizes available?

Yes. The supplied product information identifies multiple nominal pipe sizes.

What should I verify before ordering?

Confirm nominal pipe size, female NPT compatibility, internal drive configuration, pressure requirements, temperature, and application compatibility.

Important Ordering & Installation Notes

This listing is for Midland Bronze Countersunk Plugs.
The plug uses a male NPT threaded connection.
Verify the required nominal pipe size before ordering.
Confirm the mating opening uses compatible female NPT threads.
Verify the required internal wrench configuration for the selected size.
Use the correct hex or square drive tool during installation and removal.
Do not use pliers or external gripping tools on the countersunk surface.
Use PTFE tape or an appropriate thread sealant on the NPT connection.
Verify bronze is compatible with the intended application.
Confirm system pressure and temperature requirements before installation.
Inspect the threads and internal drive recess for damage before assembly.
Avoid excessive tightening that could damage the plug or mating threads.
Confirm the plug is properly seated before placing the system into service.
Pipe, fittings, valves, and additional components are sold separately unless otherwise specified.
Install according to applicable piping requirements and Midland manufacturer recommendations.