Check the listing for details. Legacy 3/8 MPT Quick Coupler And FPT Plug Fitting for Pressure Washers. Condition: New. Listed at 7.18 USD. This Legacy 3/8 MPT Quick Coupler and FPT Plug fitting is a must-have for your pressure washer accessories. It is a high-quality brass socket with a 3/8 plug that ensures a secure connection. The coupler can fit easily into any pressure washer and is compatible with Legacy brand products. This durable coupler and plug fitting can be used for a variety of cleaning tasks, including cleaning vehicles, sidewalks, and patios. It is perfect for both commercial and residential use. Get the most out of your pressure washer with this Legacy 3/8 MPT Quick Coupler and FPT Plug fitting. Legacy 3/8" Quick Connect Fittings for Pressure Washer Working Pressure: 4,500 PSI 1 pc: 3/8 Male NPT Brass Quick Coupler Socket with Stainless Steel Band• 1 pc: 3/8 Female NPT Zinc Plated Rust Coating Quick Coupler Plug Legacy Coupler fittings can withstand high temperature, high pressure and aggressive chemicals by including EPDM o-rings as standard. Legacy quick connect couplings are machined from top grade materials to the same exacting specifications as the high cost performance leaders. This 3/8 size is not for colored spray tips, a 1/4" coupler would be required. • Works with standard quick 3/8" connects (See Chart in pictures for pipe size dimensions.) Please note the dimensions shown with a tape measure, in the pictures to ensure you are purchasing the correct size. 3/8" pipe thread measures larger than 3/8"