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Brass Push Tube Fitting, 0.25 Inch Tube OD To 1/8 NPTF Male, Straight

D1 0.47	D2 0.55	Brand Numatics - C/O Asco Lp	Brand Asco Lp Cylinder	Pack Size 1.00	UOM EA	H 0.531 in	L 0.89	L1 0.37	Supplier Part Number INB103-104-020	Thread 1 1/8 NPTF	Tube O.D. (T) 0.25	Alternate Part Numbers Alternate Part Number C1LC21, Alternate Part Number MI-04215808, Alternate Part Number MINO-00609X00409	Product Weight 0.02 lbs

Product Questions & Answers 3

Product Questions & Answers

Got a setup running 1/4 inch tube lines and need to tie into a 1/8 NPTF male port. this fitting gonna work for that?

Question by: Jimmy M on Mar 31, 2026, 9:44 AM

That's what it's built for. The tube side accepts a 0.25 inch OD tube and the threaded end is 1/8 NPTF male, so it'll connect straight into a female NPTF port without any adapters in between. Push-to-connect on the tube side means you're not wrestling with ferrules or compression sleeves either. Brass construction holds up well over time in compressed air and gas flow lines, so it should serve you right in that kind of setup.

Answer by: Customer Support on Apr 2, 2026, 7:24 AM

What size tubing does this fitting take? I just wanna make sure I'm gettin' the right thing.

Question by: Johnny S on Nov 17, 2025, 6:39 PM

This Numatic fitting is made to work with 0.25-inch OD (outer diameter) tubing. That's the size you'll want to match it with for a good fit.

Answer by: Customer Support on Nov 19, 2025, 6:52 AM

got a 1/4 inch tube and need to screw into a 1/8 npt port. is this the right fitting?

Question by: Bonnie S on Sep 9, 2025, 5:14 PM

For that hookup, this connector matches a 0.25 inch tube OD on the push-in side and has 1/8 NPTF male threads on the other end, in a straight configuration.

Answer by: Customer Support on Sep 11, 2025, 7:31 AM

Similar Products

Model Number	Tube O.D. (T)	Thread 1	D1	D2	L	L1	H
INB103-102-021	0.5	1/4 NPTF	0.827	0.906	1.339	0.512	0.748 in
INB103-102-022	0.5	3/8 NPTF	0.827	0.906	1.339	0.512	0.748 in
INB103-102-023	0.5	1/2 NPTF	0.827	0.906	1.496	0.709	0.748 in
INB103-104-020	0.25	1/8 NPTF	0.472	0.551	0.886	0.374	0.531 in
INB103-104-021	0.25	1/4 NPTF	0.472	0.551	1.024	0.512	0.531 in
INB103-104-022	0.25	3/8 NPTF	0.472	0.709	1.024	0.512	0.531 in