Parker 6MSC6N-B Compression X Mnpt Tube Connector

Product Description

The PARKER 6MSC6N-B is a brass compression tube connector designed to join tubing to a male NPT threaded port in plumbing, HVAC, and fluid-handling systems. It features a 3/8-inch thread size with a compression-to-MNPT end configuration, making it a reliable choice for creating secure, leak-resistant connections without soldering. Rated to 2300 psi maximum working pressure, this connector is built to handle demanding service conditions. The brass construction conforms to ASME-SB75 and ASTM-B75 standards, ensuring material integrity and dimensional consistency. Plumbers, HVAC technicians, and pipefitters typically specify this fitting for instrument tubing, refrigerant piping, and general fluid distribution lines.

This connector is suited for residential and commercial applications where copper or compatible tubing must transition to an NPT-threaded component such as a valve, gauge, or equipment port. The compression fitting style allows installation without open flame, making it appropriate for retrofit and service work in occupied spaces or areas where brazing is restricted. The 3/8-inch MNPT end threads into standard NPT-tapped ports. Overall length is 1.57 inches, keeping the fitting compact in tight installations.

Key Features

• Compression x MNPT end connections for tool-accessible, no-solder assembly
• 2300 psi maximum working pressure rating for high-pressure service
• Brass construction per ASME-SB75 and ASTM-B75 material standards
• 3/8-inch thread size with MPT thread standard
• Compact overall length of 1.57 inches for space-restricted installations
• Cross-references Swagelok part number B-600-1-6 for substitution reference

Compatibility

Designed as an OEM-style compression fitting for use with compatible copper or brass tubing in standard NPT-ported plumbing, HVAC, and fluid-system applications requiring a 3/8-inch compression-to-MNPT connection.

Installation Notes

Installation should be performed by a licensed plumber or HVAC technician in accordance with applicable local codes and ASME B31 piping standards. Depressurize and isolate the line before disassembly or installation of any compression fitting. Hand-tighten the compression nut onto the fitting body, then advance with a wrench per standard compression fitting practice — do not overtighten, as brass fittings can be damaged. Apply thread sealant or tape to the MNPT threads as required by the system medium and local code.