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Brass Push-In Tube Fitting, 0.25 Tube OD to 1/4-18 Female NPT, Straight Bulkhead

A 1.46	D 0.63	Brand Alkon Corp	Brand Alkon Corp	Pack Size 1.00	UOM EA	Supplier Part Number AQ86-P-4X4	Thread 1 1/4-18	Thread 2 1/2-20	Tube O.D. 0.25	Tube O.D. 0.25	Alternate Part Numbers Alternate Part Number C1CK58, Alternate Part Number MI-00293988, Alternate Part Number MINO-00034F41667	Product Weight 0.10 lbs

Product Questions & Answers 2

Product Questions & Answers

If I'm using this bulkhead fitting with some soft metal tubing, will it still hold okay?

Question by: Travis A on Sep 21, 2025, 1:33 PM

This fitting is compatible with soft metal tubing, as well as polyurethane (90 durometer and above) and polybutylene tubing. The push-in design grips the tube automatically upon insertion and only tightens with pulling force or line pressure.

Answer by: Customer Support on Sep 22, 2025, 6:35 PM

got 1/4" OD poly tube, does this fitting actually bite and seal without clamps or anything?

Question by: Kent R on Jun 25, 2025, 7:34 AM

Once the tube is pushed in, the gripping teeth grab the outside of the tubing and a Buna-N O-ring seals on the tube OD. Pulling on the tube or having pressure in the line only tightens the grip because the insert cams in deeper, and the tube bottoms on a positive stop for support.

Answer by: Customer Support on Jun 26, 2025, 8:05 PM

Similar Products

Model Number	Tube O.D.	Thread 1	A	Thread 2	D	Price	Buy Now
AQ86-P-4X4	0.25	1/4-18	1.46	1/2-20	0.63
AQ86-P-6X4	0.38	1/4-18	1.89	5/8-18	0.99