Brasscraft 68-10-8X Reducing Adapter 5/8x1/2 Compression Mnpt

Product Description

The BRASSCRAFT 68-10-8X is a reducing adapter from the 68 Series line, designed to transition between a 5/8 inch compression fitting and a 1/2 inch male NPT (MNPT) threaded connection. Built from brass, this adapter handles the step-down in size while maintaining a reliable, leak-resistant seal at both ends. It is a standard fitting used in plumbing supply lines, gas appliance connections, and fixture rough-in work. Licensed plumbers and experienced pipefitters are the typical installers for this type of compression-to-threaded transition fitting.

This reducing adapter is suited for residential and light commercial plumbing applications where a compression-style supply line must connect to a male NPT threaded port. Common scenarios include water supply connections at angle stops, saddle valves, and appliance shut-off points where tubing diameter must be reduced before threading into a valve body or fixture fitting. The compression end accepts tubing with a 5/8 inch outside diameter, while the MNPT end threads into a 1/2 inch female NPT port.

Key Features

• Reduces from 5/8 inch compression to 1/2 inch MNPT in a single fitting
• Brass construction for corrosion resistance and durability in water service
• Compression end provides a tool-tightened, ferrule-based seal without soldering
• MNPT thread end conforms to standard NPT taper for reliable thread engagement
• Part of the established 68 Series adapter family for consistent fitment across similar configurations

Compatibility

Designed as an OEM-style replacement or new-installation fitting for plumbing systems requiring a 5/8 inch compression to 1/2 inch male NPT reducing connection.

Installation Notes

Installation should be performed by a licensed plumber in accordance with applicable local plumbing codes and IPC guidelines. Shut off the water supply and relieve line pressure before disassembling any existing fittings. Apply PTFE thread tape or an approved pipe thread sealant to the MNPT threads before engaging the female NPT port. Do not overtighten the compression nut, as excessive force can deform the ferrule and compromise the seal.

Technical Specifications

• Series: 68 Series
• Inlet Size: 5/8 inches (Compression)
• Outlet Size: 1/2 inches (MNPT)
• Connection Type: Compression x MNPT
• Material: Brass

Standard Information

• Brand: BRASSCRAFT
• Manufacturer Part Number: 68-10-8X