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Steel Adapter, 1/4-18 Female NPT To 7/16-20 Male JIC 37 deg Flare, Straight Bulkhead

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Description & Features

The Steel Adapter, 1/4-18 Female NPT To 7/16-20 Male JIC 37 deg Flare, Straight Bulkhead offers precise connectivity solutions in industrial applications. Crafted by Brennan Industries Inc, this component ensures reliable performance and durability.

Featuring a 1/4-18 Female NPT to 7/16-20 Male JIC 37deg; flare connection, it is suitable for threaded assemblies demanding high precision. This bulkhead adapter guarantees leak-free connections without the need for thread sealants, thanks to its high-quality steel construction.

Ideal for systems requiring a 0.25-inch tube outer diameter, this adapter aligns with rigorous industrial standards. The straight bulkhead design facilitates easy installation and maintenance in tight spaces, enhancing the efficiency of hydraulic and pneumatic setups.

With a catalog number of C1EF58, this steel adapter positions itself as a robust choice for achieving seamless and secure connections in various technical environments.

MPN: 2705-04-04

Supplier Part Number: 2705-04-04

Specifications

a Dimensions
2.04 in
Connection Size 1
1/4 in
Connection Size 2
1/4 in
Connection Type
FNPT, Male JIC
Connection Type 1
Male SAE 37 deg JIC Flare
Connection Type 2
Female NPTF
Dimension Standards
SAE J476, SAE J514
Dimensions
2.09 in L
Finish
Trivalent Zinc-Plated
Fitting Type
Adapter
Hex Size
3/4 in
Material
Steel
Material Construction
AISI 12L14/C1045 Steel
Maximum Operating Pressure
6000 psi
Series
2705 Series
Thread Sealant
Without Thread Sealant
Thread Size
7/16-20, 1/4-18
Tube OD
1/4 in
Tube Outside Diameter
1/4 in

Product Questions & Answers (4)

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Question by: Daryl R on Apr 21, 2025, 7:27 AM
got a bulkhead port i need to pass through a bracket, is this the straight adapter with 1/4-18 female npt on one side and 7/16-20 jic on the other?
Answer by: Customer Support on Apr 23, 2025, 6:58 AM
For a straight bulkhead pass-through, this adapter matches 1/4-18 female NPT on one end and 7/16-20 male JIC 37 degree flare on the other.
Question by: Melvin R on Mar 28, 2025, 7:15 PM
got a panel with a 1/4 NPT port on one side and need to run a JIC line off the other, this bulkhead style gonna work for that kind of setup?
Answer by: Customer Support on Mar 30, 2025, 6:54 PM
That's exactly what this fitting is built for. One end threads into a 1/4-18 NPT port, and the other side puts out a 7/16-20 male JIC 37-degree flare connection. The bulkhead design means it mounts through a panel or plate and keeps both sides accessible, so you can tie in your JIC line on the flare end without any awkward routing. Solid steel construction from Brennan Industries, so it'll hold up in a working hydraulic or pneumatic system without leaking down on you.
Question by: Harvey C on Feb 6, 2026, 2:57 PM
Will this here fitting work to connect a quarter-inch OD tube to a 1/4-18 female NPT port?
Answer by: Customer Support on Feb 7, 2026, 4:15 PM
This steel adapter is indeed designed to make that connection, going from a 1/4-18 female NPT to a 7/16-20 male JIC 37 degree flare, which works with a 0.25-inch outer diameter tube.
Question by: Floyd P on Dec 7, 2025, 5:01 PM
i’ve got a 1/4 npt port and need to hook up a 1/4 inch tube jic line, is this the right bulkhead fitting?
Answer by: Customer Support on Dec 9, 2025, 6:16 AM
The threads on this adapter are 1/4-18 female NPT on one side and 7/16-20 male JIC 37 degree flare on the other, and it matches a 0.25 inch tube O.D. on the JIC side.

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