Skip to the beginning of the images gallery

06 NUT

Description & Features

Manufactured by Brennan Industries, this 3/8" tube nut is part of the C0318 series and designed for use with 9/16-18 UNF threaded connections. The 06 NUT features a 0.380" bore diameter and a 0.688" hex across flats, with an overall length of 0.75". These dimensions make it suited for securing tube end fittings in hydraulic line assemblies where a compact, reliable threaded connection is required.

The C0318 series is a standard Brennan tube nut configuration, commonly paired with compatible flareless or flared tube fittings for 3/8" OD tubing in hydraulic and fluid power circuits.

SKU: C0318-06

Supplier Part Number (MPN): C0318-06

Specifications

Brand Brennan Industries Inc	Brand Brennan Industries	Pack Size 1.00	UOM EA	Supplier Part Number C0318-06	Product Weight 0.04 lbs

Product Questions & Answers (1)

Question by: Neil C on Oct 14, 2025, 7:18 AM

Got a 3/8" OD tube line I'm trying to secure up and need to know if this nut'll work with a 9/16-18 UNF fitting I already got on hand.

Answer by: Customer Support on Oct 15, 2025, 9:25 AM

For 3/8" OD tubing with a 9/16-18 UNF threaded connection, this is the right nut. The C0318-06 is built specifically for that tube size and thread spec, so if your fitting matches those two things, you're good to go.