Eaton 3220X6X4 Pipe Bushing 3/8 X 1/4 in Mnptf 5000 Psi

Product Description

The EATON 3220X6X4 is a straight pipe bushing designed to reduce a 3/8 inch male MNPTF thread down to a 1/4 inch female FNPTF thread in hydraulic and industrial piping systems. This hex bushing handles a maximum working pressure of 5,000 psi and is rated for temperatures ranging from -65 degrees F to 250 degrees F, making it suitable for demanding fluid power and general industrial plumbing applications. Licensed plumbers, pipefitters, and hydraulic system technicians install this fitting during assembly or field repair when a threaded reduction is needed between components with mismatched port sizes.

This bushing fits standard MNPTF to FNPTF threaded connections and is used in hydraulic lines, pneumatic systems, and industrial plumbing where a straight in-line thread reduction is required. Its compact 11/16 inch overall length and 11/16 inch hex size make it practical in tight spaces. It meets ASA, ASME, SAE, and SAE 130140 standards, confirming suitability for professional trade use in both stationary and mobile hydraulic equipment.

Key Features

• Reduces 3/8 inch male MNPTF to 1/4 inch female FNPTF in a straight configuration
• Rated to 5,000 psi maximum working pressure
• Temperature range of -65 degrees F to 250 degrees F
• 11/16 inch hex size for standard wrench installation
• 11/16 inch overall length for compact inline fitment
• Meets ASA, ASME, SAE, and SAE 130140 standards

Compatibility

Designed as a standard MNPTF x FNPTF straight pipe bushing for hydraulic, pneumatic, and industrial plumbing systems requiring a 3/8 inch to 1/4 inch threaded port reduction.

Installation Notes

Installation is performed by licensed pipefitters, plumbers, or hydraulic technicians. Depressurize and isolate the hydraulic or piping system fully before removing or installing any threaded fittings. Apply an appropriate thread sealant compatible with the system fluid; verify sealant compatibility before use. Use a correctly sized wrench on the hex to avoid rounding and do not overtighten, as tapered NPT threads can crack fittings or damage ports.