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Brass Push>Connect Air Brake Tube Fitting, 0.25 Inch Tube OD To 1/8-27 Male NPT, Straight

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Description & Features

Engineered from CA360 brass, this fitting exhibits moderate vibration resistance and a wide pressure range from vacuum to 150 psi. Designed for seamless integration, it meets D.O.T. FMVSS 571.106 and SAE J1131 standards for air brake systems.

The Male Connector offers effortless assembly with its one-piece, reusable, and field serviceable design. The fitting is equipped with an EP O-ring to ensure a secure seal, making it suitable for a wide temperature range of -40deg;F to +200deg;F.

MPN: 1868X4

Supplier Part Number: 1868X4

Quick connect technology allows for easy installation by simply inserting the tubing until a solid stop is felt, ensuring a durable grip and seal. This fitting is part of the Quick Connect Brass Air Brake Tube Fittings category.

Specifications

Brand
Danfoss Power Solutions (II LLC Aeroquip)
Brand
Aeroquip
Pack Size
1.00
UOM
EA
L
0.95
Supplier Part Number
1868X4
Thread 1
1/8-27
Tube O.D.
0.25
Tube O.D.
0.25
Alternate Part Numbers
Alternate Part Number C1HN17, Alternate Part Number MI-03512638, Alternate Part Number MINO-00925X36599
Product Weight
0.03 lbs

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Product Questions & Answers (4)

Question by: Phil G on Aug 19, 2025, 4:45 PM
got a setup that gets pretty hot around the compressor lines. what kind of temps can these handle before the seals go bad
Answer by: Customer Support on Aug 21, 2025, 10:47 AM
EP O-rings and CA360 brass construction allow the fitting to operate safely in temperatures ranging from -40 to 200 degrees Fahrenheit. The working pressure limit maxes out at 150 psi, and it also supports vacuum applications.
Question by: Merle H on Jul 11, 2025, 4:53 PM
Got some 1/4 inch air brake tubing here, will this fitting go right onto it and what thread is on the other end?
Answer by: Customer Support on Jul 12, 2025, 5:00 PM
It takes 0.25 inch tube OD on the push to connect side, and the male pipe thread is 1/8-27 NPT on the other end in a straight configuration.
Question by: Travis O on Aug 26, 2025, 7:53 AM
fitting says it goes up to 150 psi, that enough for a standard air brake line on a heavy truck?
Answer by: Customer Support on Aug 27, 2025, 12:20 PM
For air brake systems running at typical operating pressures, 150 psi is right in the range you'd expect this fitting to handle. It also covers vacuum on the low end, so the full spectrum from vacuum up to 150 psi is what you're working with. It meets D.O.T. FMVSS 571.106 and SAE J1131 standards, which are the certifications specifically required for air brake applications, so it's built to those system demands.
Question by: Melvin S on Mar 11, 2026, 6:06 AM
trying to hook up 1/4 inch air brake tubing to a 1/8 npt port. is this the right straight fitting?
Answer by: Customer Support on Mar 12, 2026, 6:47 PM
You’re looking at a push to connect end sized for 0.25 inch tube OD, and the other end is 1/8-27 male NPT in a straight configuration, so it matches that tube-to-port combo.