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Knox Trailers · Hardware & Fasteners
266A-6-6
In stock · ships from Knoxville
This is a brass compression fitting that connects a 3/8 inch outside diameter tube (typically nylon or copper air brake line) to a 3/8 inch female NPT (National Pipe Thread) port.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
We don't publish fitment for this part yet. Rather than guess, get it confirmed against your truck in under a minute.
It is commonly found in heavy‑duty truck and trailer air brake systems, allowing you to join a tube to a valve, brake chamber, or other threaded component. Replacing these fittings is often necessary when they become corroded, develop leaks, or when re‑routing or upgrading air lines.
Part Number: 266A-6-6
BRASS 3/8COMPX3/8FNPT
Unit: ea
Dealer: Knox Trailers
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