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Brass Tube Fitting, 0.38 Inch Tube OD To 5/8-18 Thread Long Flare Nut

Brand Danfoss Power Solutions (II LLC Aeroquip)	Brand Aeroquip	Pack Size 1.00	UOM EA	L 1.31	Supplier Part Number 41X6	Thread 1 5/8-18	Tube O.D. 0.38	Tube O.D. 0.38	Alternate Part Numbers Alternate Part Number C1HP84, Alternate Part Number MI-00333069, Alternate Part Number MINO-00925F73012	Product Weight 0.06 lbs

Product Questions & Answers 3

Product Questions & Answers

Will this nut work with a standard flare fitting, or does it need a special one?

Question by: Tony B on May 14, 2025, 8:52 PM

This flare nut is designed for use with tubes having a 0.38 inch outer diameter and a 5/8-18 thread size, ensuring compatibility within systems adhering to these specifications.

Answer by: Customer Support on May 16, 2025, 6:36 AM

got a 3/8 tube line, what thread is this long flare nut set up for?

Question by: Phil W on Nov 13, 2025, 3:56 PM

For a 0.38 inch tube outside diameter, this long flare nut uses a 5/8-18 thread, which is the size it is built around for making that flare-style connection.

Answer by: Customer Support on Nov 14, 2025, 7:12 PM

part number 41X6, is that the long nut version or the standard length? trying to make sure I grab the right one before I put in the order

Question by: Billy C on Feb 9, 2026, 2:45 PM

The 41X6 is specifically the long flare nut configuration. It's part of the Eaton Aeroquip 41x Series, and the "long" designation is built right into what this part is. If you were looking at a standard-length version, that would be a different part number within the same series.

Answer by: Customer Support on Feb 10, 2026, 6:40 PM

Similar Products

Model Number	Tube O.D.	Thread 1	L
41X4	0.25	7/16-20	0.94
41X5	0.31	1/2-20	1.12
41X6	0.38	5/8-18	1.31
41X8	0.5	3/4-16	1.62