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Brass Compression Fitting For Plastic, Copper, & Aluminum Tubing, 0.38 Inch Tube OD To 3/8-18 Male NPT, Straight

Brand Danfoss Power Solutions (II LLC Aeroquip)	Brand Aeroquip	Pack Size 1.00	UOM EA	L 1.16	Supplier Part Number 68X6X6	Thread 1 3/8-18	Tube O.D. 0.38	Tube O.D. 0.375	Alternate Part Numbers Alternate Part Number 1164953, Alternate Part Number C1HR23, Alternate Part Number MI-00334071, Alternate Part Number MINO-00925F73369	Product Weight 0.10 lbs

Product Questions & Answers 2

Product Questions & Answers

Will this fitting hold up okay in a hydraulic system running around 1500 psi?

Question by: Joyce C on Aug 13, 2025, 4:43 PM

Yes, it should. These fittings are rated for working pressures up to 2000 psi, so 1500 psi is well within its limits, giving you a good safety margin.

Answer by: Customer Support on Aug 14, 2025, 9:50 PM

fitting says it works with plastic tubing but does it need any extra parts for that or does everything come with it?

Question by: Ricky J on Dec 3, 2025, 6:17 AM

For some plastic tubing types, inserts are required to get a proper seal and keep the tubing from collapsing under the ferrule. Those inserts are not included with the fitting itself, so you'd want to confirm whether your specific plastic tubing requires them before assembly. Copper and aluminum tubing generally go in without extras.

Answer by: Customer Support on Dec 4, 2025, 8:06 PM

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Model Number	Tube O.D.	Thread 1	L
68X6	0.375	1/4-18	1.17
68X10	0.625	1/2-14	1.5
68X2	0.125	1/8-27	0.78
68X3	0.1875	1/8-27	0.84
68X4	0.25	1/8-27	0.88
68X4X4	0.25	1/4-18	1.06
68X5	0.3125	1/8-27	0.91
68X5X4	0.3125	1/4-18	1.09
68X6X2	0.375	1/8-27	0.97
68X6X6	0.375	3/8-18	1.16
68X6X8	0.375	1/2-14	1.34
68X8	0.5	3/8-18	1.22
68X8X4	0.5	1/4-18	1.22
68X8X8	0.5	1/2-14	1.41