Brasscraft 68-6-8X Reducing Adapter 3/8x1/2 Compression Mnpt

Product Description

The BRASSCRAFT 68-6-8X is a reducing adapter from the 68 Series line, designed to connect a 3/8 inch compression fitting to a 1/2 inch male NPT (MNPT) threaded connection. Constructed from brass, this adapter transitions between two common connection types found in residential and light commercial plumbing systems. It is a compact, single-piece fitting that reduces port size while changing connection style in one step. Licensed plumbers and experienced service techs install this type of adapter when connecting supply lines, appliance hookups, or instrument tubing to threaded pipe fittings where a size reduction is also required.

The 68-6-8X is suited for residential plumbing and light commercial applications where compression-to-NPT transitions are needed. Typical installations include under-sink supply connections, water heater hookups, and appliance supply line terminations. The compression inlet accepts 3/8 inch tubing, while the 1/2 inch MNPT outlet threads directly into a female NPT port on a valve, fixture, or fitting.

Key Features

• Reduces from 3/8 inch compression inlet to 1/2 inch MNPT outlet in a single fitting
• Brass construction provides corrosion resistance and durability in wet service environments
• Compression x MNPT configuration eliminates the need for separate transition and reducing fittings
• Compatible with standard 3/8 inch OD tubing on the compression side
• Part of the BrassCraft 68 Series reducing adapter family

Compatibility

Designed as an OEM-style replacement or service fitting for residential and light commercial plumbing systems requiring a 3/8 inch compression to 1/2 inch MNPT transition.

Installation Notes

This fitting is installed by a licensed plumber or qualified service technician. Shut off the water supply and relieve line pressure before beginning any fitting replacement or new installation. Finger-tighten the compression nut onto the tubing, then snug with an appropriately sized wrench — do not overtighten, as brass compression fittings can crack under excessive force. Apply thread sealant or PTFE tape to the MNPT threads before threading into the female port, following local plumbing code requirements.

Technical Specifications

• Series: 68 Series
• Inlet Size: 3/8 inches
• Outlet Size: 1/2 inches
• Inlet Connection Type: Compression
• Outlet Connection Type: MNPT
• Material: Brass

Standard Information

• Brand: BRASSCRAFT
• Manufacturer Part Number: 68-6-8X