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Quick Connect Plug 3/8" MNPT Zinc-Plated Steel – OEM Replacement Part

Original price $3.60 - Original price $3.60
Original price
$3.60
$3.60 - $3.60
Current price $3.60

Part Number: 4780
Category: Pressure Washer Fittings → Quick Connect Couplers → Quick Connect Plugs
Type: Zinc-Plated Steel Male Thread Quick Connect Plug


The Quick Connect Plug 3/8" MNPT Zinc-Plated Steel is a durable OEM replacement fitting designed to provide fast, secure connections for pressure washer hoses, spray guns, lances, surface cleaners, and other high-pressure cleaning accessories. Constructed from zinc-plated steel, this quick connect plug delivers reliable performance, corrosion resistance, and long service life in commercial and industrial pressure washing applications.


Key Features & Benefits

  • OEM-quality quick connect plug
  • Durable zinc-plated steel construction
  • Industry-interchangeable quick connect design
  • Corrosion-resistant plated finish
  • Fast tool-free connection and disconnection
  • 3/8" MNPT threaded connection
  • Rated up to 5000 PSI with compatible brass sockets
  • Suitable for commercial and industrial applications
  • Compatible with a wide variety of pressure washer accessories
  • Designed for dependable long-term performance

Technical Specifications

Product Type: Quick Connect Plug

Material: Zinc-Plated Steel

Thread Size: 3/8" MNPT

Thread Type: Male National Pipe Thread

Connection Style: Industry Interchangeable Quick Connect

Maximum Pressure: 5000 PSI (with compatible brass socket)

Application: High-Pressure Fluid Connections

OEM Replacement: Yes


Typical Applications

  • Pressure washer hose assemblies
  • Spray gun connections
  • Lance and wand hookups
  • Surface cleaner connections
  • High-flow pressure washer systems
  • Commercial cleaning equipment
  • Industrial wash-down systems
  • Equipment repairs and maintenance
  • Pressure washer plumbing installations

Performance Advantages

  • Allows rapid accessory changes without tools
  • Zinc-plated finish helps resist corrosion and wear
  • Supports demanding high-pressure cleaning applications
  • Provides secure, leak-resistant connections
  • Reduces downtime during equipment setup and maintenance
  • Compatible with industry-standard quick connect fittings
  • Suitable for high-flow pressure washer systems
  • Helps improve workflow efficiency and productivity
  • Built for long-term commercial and industrial use

Maintenance Recommendations

  • Inspect the plug regularly for wear, corrosion, or damage.
  • Ensure proper engagement with compatible quick connect sockets before operation.
  • Replace worn or damaged fittings immediately.
  • Keep connection surfaces clean and free of dirt and debris.
  • Apply appropriate thread sealant when installing threaded accessories.
  • Periodically inspect the complete quick connect assembly for leaks and excessive wear.

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