Midland Industries
Lead-Free Brass MIP Square Head Plug
- Availability:
- Usually Ships Same Day
- Weight:
- 0.00 LBS
Description
Lead-Free Brass MIP Square Head Plug
Lead-Free Brass MIP Square Head Plugs provide a male pipe-threaded closure for sealing or terminating a compatible female-threaded pipe, fitting, valve, manifold, or equipment connection.
The square head provides a convenient gripping surface for installation and removal with an appropriate wrench, while the lead-free brass construction offers durability and corrosion resistance for compatible potable-water, plumbing, agricultural, construction, industrial, water-transfer, and general fluid-handling applications.
Product Highlights
- Lead-free brass construction
- Male pipe-thread connection
- MIP threaded plug configuration
- Square head for wrench engagement
- Closes a compatible female-threaded connection
- Compact and serviceable threaded closure
- Suitable for compatible potable-water and general plumbing applications
Technical Specifications
| Product Type | Square Head Pipe Plug |
|---|---|
| Material | Lead-Free Brass |
| Connection | Male Pipe Thread (MIP) |
| Connection Type | Threaded |
| Head Style | Square Head |
| Mating Connection | Compatible Female Pipe Thread |
| Primary Function | Close or Terminate a Female-Threaded Piping Connection |
Construction Details
The fitting features a durable lead-free brass body with external male pipe threads and an integral square head.
The male threaded portion installs into a compatible female pipe-threaded opening, while the solid plug body closes the connection.
The square head provides defined wrench flats for installation and removal, making the plug useful for serviceable closures, unused ports, manifolds, valves, equipment connections, and completed piping runs.
Connection Configuration
Male Pipe Thread
The male pipe-thread connection installs into a compatible female-threaded pipe fitting, valve, manifold, adapter, or equipment port.
Square Head
The raised square head provides a gripping surface for an appropriate wrench, helping simplify installation and future removal.
How a MIP Square Head Plug Works
A MIP square head plug threads into a compatible female pipe-threaded opening and closes the connection.
An appropriate thread-sealing method should be applied to the male pipe threads before installation. The square head can then be engaged with a suitable wrench to tighten the plug.
When removal is required, the piping system should first be safely depressurized before the plug is loosened and removed.
Connection Reference
| Fitting Style | Connection | Head Style | Function |
|---|---|---|---|
| Plug | Male Pipe Thread | Square Head | Close / Terminate Connection |
MIP Square Head Plug Design
Male Threaded Closure
The male-threaded design allows the plug to install directly into a compatible female pipe-threaded opening.
Square Head Access
The square head gives the installer a defined wrenching surface for tightening and removing the plug as needed.
Common Applications
Plumbing & Water Systems
- Compatible potable-water piping
- Residential plumbing systems
- Commercial plumbing systems
- Water distribution piping
- Unused female-threaded outlets
- Pump and equipment connections
Industrial & General Service
- Agricultural piping systems
- Construction applications
- Industrial water systems
- Valve and manifold ports
- Maintenance and repair installations
- Compatible general fluid-handling systems
Lead-Free Brass Benefits
Lead-free brass combines the durability and corrosion resistance associated with brass fittings with material construction intended for applications requiring lead-free plumbing components.
Brass threaded plugs provide a durable and serviceable way to close compatible female-threaded piping connections in water, plumbing, agricultural, construction, and industrial systems.
Installation & Selection Considerations
- Confirm the mating component uses a compatible female pipe-thread connection before ordering.
- Use a thread-sealing method suitable for brass fittings and the intended media.
- Use the square head with an appropriate wrench and avoid excessive tightening.
- Depressurize the system before removing an installed plug.
- Verify pressure, temperature, media, and lead-free application requirements before installation.

Use the Midland Industries catalog to review lead-free brass fitting information, connection styles, dimensional data, and related product details before ordering.
Midland Industries Catalog PDFNeed Help Selecting a Lead-Free Brass Fitting?
Our plumbing, brass fitting, and industrial product specialists can help review your pipe size, MIP connection requirements, square-head plug configuration, lead-free material requirements, pressure and temperature requirements, and application before you order.
Frequently Asked Questions
What is a Lead-Free Brass MIP Square Head Plug?
It is a male-threaded brass closure fitting with a square head used to close a compatible female pipe-threaded connection.
What does MIP mean?
MIP refers to a male pipe-thread connection. The plug installs into a compatible female pipe-threaded opening.
Why does the plug have a square head?
The square head provides a defined wrenching surface that can help with installation and removal.
What connects to this plug?
The male-threaded plug installs into a compatible female-threaded pipe fitting, valve, manifold, adapter, or equipment connection.
What is the difference between a plug and a cap?
A plug typically has male threads and installs into a female-threaded opening, while a cap typically has female threads and installs over a male-threaded connection.
What material is this plug made from?
This square head plug features lead-free brass construction.
Should thread sealant be used?
Use a thread-sealing method appropriate for brass pipe-thread connections, the transferred media, and the intended application.
Where can I find additional Midland Industries fitting information?
Use the Midland Industries Catalog PDF linked above to review additional product information, fitting configurations, and related Midland Industries products.
Important Ordering & Installation Notes
- The fitting uses a male pipe-thread connection.
- Use with a compatible female pipe-threaded opening.
- Use an appropriate thread-sealing method and avoid overtightening.
- Depressurize the system before removing the installed plug.
- Verify lead-free, pressure, temperature, and media requirements before use.