Description

Overview

The 3/8 x 1/4 NPTF female connector joins 3/8-inch OD nylon air-brake tube to a 1/4 NPTF male-threaded component. Its straight brass body aligns the tube and thread, with a push-in collet gripping the line.

Features

• Push-in connection for 3/8-inch OD nylon air tube.
• Internal 1/4 NPTF female pipe thread.
• Brass body with 19mm tightening hex.
• Integral release collet and tube support.

Specifications and Materials

The complete fitting includes its internal collet, tube support and seals. Overall length is 39mm, with an internally threaded female end.

Part number: DQ66DOT0604.

View the manufacturer DOT air brake fitting chart

Compatibility and Fitment

Measure tube outside diameter, not bore. Use 3/8-inch DOT nylon tube with suitable wall thickness for its internal support. Confirm a mating 1/4 NPTF male thread. Do not substitute 10mm metric tube, BSP threads or male connectors.

These cross-references show where this part replaces the part numbers and applications listed. Some installations may need minor changes. 35-660604, 35660604, AQ66-DOT-6X4, AQ66DOT6X4, 1866X6, 3114 60 14DOT, 31146014DOT, S66PMT-6-4, S66PMT64, 13B7.13B666B, 13B713B666B, 266PPDOT-6B, 266PPDOT6B, 966-64, 96664, PP66D-DOT, PP66DDOT, 1866-6, 18666, DOT66-6-4, DOT6664, G31150-0604, G311500604, 2466-6, 24666, APB66F6X4, 660604, 66PMT-6-4, 66PMT64, PL1366-6B, PL13666B, 87047, 966-6PXDOT, 9666PXDOT

Related Parts

Check these alternate connector sizes against the tube and thread you need.

Compliance and Safety

This DOT fitting family meets ADR 38/05, FMVSS 571.106 and SAE air-brake fitting requirements. Depressurise the circuit before cutting. Use a square cut, remove damaged tube ends and push fully into the collet. Pull back gently to check retention. Seal the male thread appropriately and leak-test both connections.

Trailer Applications

Workshops fit this 3/8 x 1/4 NPTF female connector where a nylon air line meets a smaller male thread in truck or trailer brake, suspension or auxiliary air plumbing. The straight body preserves line direction.

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 air fittings for trailer pneumatic repairs. Send a photo, tube OD and thread details if the old connector is difficult to identify.

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