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Steel Adapter, 1/4-18 Female NPT To 9/16-18 Male JIC 37 deg Flare, Straight

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Description & Features

Manufactured from steel for durability in demanding hydraulic systems, this straight adapter connects a 1/4-18 Female NPT port to a 9/16-18 Male JIC 37° flare fitting. Supplied by Danfoss Power Solutions (Aeroquip), it is catalogued under model line Pipe to 37° Flare Steel Adapters and carries catalog number C1AV56.

The Steel Adapter, 1/4-18 Female NPT To 9/16-18 Male JIC 37 deg Flare, Straight is rated for a minimum working temperature of -40°F and features a hex size of 1.063 on the male end, with a tube O.D. of 0.38. No thread sealant is pre-applied. Suitable for use across marine and military environments, chemical processing, pulp and paper, food and beverage processing, and off-shore drilling applications.

SKU: 2022-4-6S

Supplier Part Number (MPN): 2022-4-6S

Alternate Part Numbers: C1AV56, MI-00311999, MINO-00015F61350

Specifications

A
1.40
Alternate Part Numbers
Alternate Part Number C1AV56, Alternate Part Number MI-00311999, Alternate Part Number MINO-00015F61350
Application
Marine/Military, Chemical Processing, Pulp and Paper Industries, Food and Beverage Processing, Off-Shore Drilling
Brand
Danfoss Power Solutions (II LLC Aeroquip)
Brand
Aeroquip
Pack Size
1.00
UOM
EA
End Gender 1
13553
End Gender 2
13556
End Size 1
0.25
End Size 2
0.56
End Type 1
NPTF
End Type 2
SAE 37
Hex Size 2
1.06
Minimum Working Temperature
-40
Supplier Part Number
2022-4-6S
Thread 1
1/4-18
Thread 2
9/16-18
Thread Sealant
No
Tube O.D.
0.38
Tube O.D.
0.38
Product Weight
0.10 lbs

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Product Questions & Answers (4)

Question by: Rex C on Jul 25, 2025, 6:57 PM
i’ve got a hose end that’s 9/16-18 JIC, is this the straight adapter that’ll screw into a 1/4-18 female pipe port?
Answer by: Customer Support on Jul 26, 2025, 9:27 PM
Match the threads on both ends and it lines up: one side is 1/4-18 female NPTF, and the other side is a 9/16-18 male SAE 37 degree flare (JIC). It’s a straight steel pipe to 37 degree flare adapter.
Question by: Brett B on Jan 1, 2026, 1:10 PM
Will this adapter hold up okay in a marine environment?
Answer by: Customer Support on Jan 3, 2026, 6:22 AM
Given its applications include marine environments, this adapter should be suitable for such use. It's also good for chemical processing, pulp and paper, food and beverage, and offshore drilling.
Question by: Floyd W on Dec 6, 2025, 1:15 PM
got a hose end that's 9/16-18 JIC, and the port i'm trying to hit is 1/4-18 female npt. is this the right adapter to tie those together
Answer by: Customer Support on Dec 8, 2025, 6:33 AM
It’s a straight steel adapter that converts 1/4-18 female NPTF on one side to 9/16-18 male JIC with a 37 degree flare on the other, so it matches the thread types and sizes you described.
Question by: Dwight M on Aug 21, 2025, 7:40 PM
Got a 1/4 female NPT port on a pump housing and need to connect it to a JIC line. this the right adapter for that situation?
Answer by: Customer Support on Aug 23, 2025, 6:46 AM
That's the use case this part covers. One end threads into a 1/4-18 female NPT port, and the other end is a 9/16-18 male JIC with the standard 37-degree flare seat. Straight configuration, so there's no angle change in the line. Eaton Aeroquip makes these to tight tolerances, and the 2022 series is a well-established line for exactly this kind of pipe-to-flare transition.