Description

Overview

The 1/2 x 3/8 NPTF female connector joins 1/2-inch outside-diameter nylon air-brake tubing to a 3/8 NPTF male-threaded component. Its straight brass body provides a direct connection between the larger air line and smaller threaded port without introducing an elbow or additional adaptor.

Features

• Push-in connection accepts 1/2-inch OD imperial nylon air tube.
• Internal 3/8 NPTF female pipe thread.
• Brass hex body provides a tightening surface during installation.
• Integrated gripping collet, tube support and sealing components.
• Release collet permits tube removal without dismantling the threaded connection.

Specifications and Materials

The assembled fitting includes its retained push-in collet, internal tube support and O-ring seal. Therefore, the nylon tube connects without a separate compression nut or olive. The straight configuration keeps both connections aligned, while the brass construction provides a rigid threaded connection for pneumatic equipment.

Part number: DQ66DOT0806.

See the manufacturer DOT air brake fitting chart

Compatibility and Fitment

For the 1/2 x 3/8 NPTF female connector, confirm the nylon tubing measures 1/2 inch across its outside diameter and the mating component has a 3/8 NPTF male thread. These are different measurements, so matching the tube alone is insufficient. Also, avoid substituting 12mm metric tubing, BSP threads or a male connector with an external pipe thread.

These cross-references show where this part replaces the part numbers and applications listed. Some installations may need minor changes. 35-660806, 35660806, AQ66-DOT-8X6, AQ66DOT8X6, 1866X8, 66PTC-8-6, 66PTC86, PL1366-8C, PL13668C, S66PMT-8-6, S66PMT86, 660806, 02466-0806, 024660806, 266PC-8×6, 266PC8x6, 266PPDOT-8C, 266PPDOT8C, 966-8PXDOT, 9668PXDOT, NP66-8-6, NP6686, PC1466-8C, PC14668C

Related Parts

Compare these alternate sizes when replacing a connector with different tube or thread dimensions.

Compliance and Safety

This DOT fitting family meets ADR 38/05, FMVSS 571.106, SAE J2494/3 and SAE J1131 requirements. Before installation, depressurise the circuit and cut the nylon tube squarely. Remove damaged ends, push the tube fully into the collet and check retention. Then repressurise and leak-test the push-in and threaded connections.

Trailer Applications

This fitting suits compatible truck and trailer air-brake valves, air-suspension plumbing and auxiliary pneumatic systems using 1/2-inch nylon air lines with 3/8 NPTF male-threaded ports. Its straight design maintains the existing tube direction through the connection.

Cross-reference and Suitability

This part cross-references to or suits the following equivalent part numbers and compatible alternatives:

Why Choose ICS Trailers

ICS Trailers supplies imperial push-in air fittings for heavy vehicle pneumatic repairs. If an old connector has unclear markings, send its photo, nylon tube diameter and mating thread details so we can help identify the correct replacement.

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