Steel Hex Head Plug 3/8" MPT 4000 PSI – OEM Replacement Fitting
Part Number: 2574
Category: Pressure Washer Parts → Fittings & Adapters → Steel Plugs & Caps
Type: Steel Hex Head Pipe Plug
The Steel Hex Head Plug 3/8" MPT (Part #2574) is a heavy-duty OEM replacement fitting designed to securely seal unused ports in pressure washer systems, pumps, hydraulic support systems, compressed air equipment, and industrial fluid transfer applications. Featuring a 3/8-inch Male Pipe Thread (MPT) connection and a durable hex head design, this plug provides a secure, leak-resistant seal while allowing easy installation and removal using standard hand tools.
Key Features & Benefits
- Genuine OEM replacement fitting
- 3/8" Male Pipe Thread (MPT) connection
- Heavy-duty steel construction
- Hex head design for easy installation
- Rated up to 3000 PSI
- Leak-resistant threaded seal
- Suitable for high-pressure applications
- Protects unused ports from contamination
- Durable construction for demanding environments
- Long service life and reliable performance
- Easy installation and removal with standard wrenches
Technical Specifications
Part Number: 2574
Product Type: Hex Head Pipe Plug
Connection Size: 3/8" MPT
Thread Type: Male Pipe Thread (MPT)
Material: Steel
Maximum Pressure: 3000 PSI
Drive Type: External Hex Head
OEM Replacement: Yes
Application: Port Sealing and System Protection
Common Applications
- Pressure washer systems
- Pump manifolds
- Hydraulic support systems
- Compressed air systems
- Pressure gauge ports
- Water supply systems
- Industrial fluid transfer equipment
- Chemical application equipment
- Agricultural machinery
- Wash-down systems
- Commercial cleaning equipment
Performance Benefits
- Provides a secure leak-resistant seal
- Helps maintain system pressure integrity
- Suitable for demanding high-pressure applications
- Durable steel construction for long service life
- Protects open ports from dirt and contaminants
- Easy wrench installation and removal
- Reliable performance under pressure
- Supports safe and efficient system operation
Signs Replacement May Be Needed
Replace the plug if you notice:
- Damaged or stripped threads
- Visible corrosion or rust
- Fluid or air leaks
- Rounded or damaged hex head
- Cracks or deformation in the fitting body
- Difficulty achieving a proper seal
- Excessive wear from repeated installation
Installation Notes
- Shut off system pressure before servicing.
- Inspect port threads for wear or damage.
- Apply appropriate thread sealant or PTFE thread tape.
- Thread the plug into the port by hand.
- Tighten securely using the proper wrench.
- Avoid overtightening to prevent thread damage.
- Pressurize the system and inspect for leaks.
Important: Verify compatibility with your system's thread size and operating pressure requirements before installation. Always ensure the fitting's pressure rating meets or exceeds system operating pressure.
Maintenance Recommendations
- Inspect plugs regularly for leaks.
- Check for corrosion or physical damage during maintenance.
- Replace damaged or worn plugs promptly.
- Keep threads clean and free from debris.
- Verify proper sealing after servicing.
- Monitor plug integrity during system operation.
