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Steel Adapter, 1/4-18 Female NPT To 1/2-20 Male JIC 37 deg Flare, 90 deg Elbow

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Description & Features

The Eaton Aeroquip Steel Adapter is expertly designed for demanding environments, making it ideal for marine, military, chemical processing, and off-shore drilling applications. This robust adapter features a 1/4-18 female NPT connection transitioning to a 1/2-20 male JIC 37-degree flare, configured in a 90-degree elbow. Its construction ensures durability and reliable performance under high-pressure conditions.

Engineered with precision, this adapter is part of the trusted Danfoss / Eaton 2025 Series, ensuring compatibility and seamless integration with existing systems. The adapter's compact dimensions, with an A measurement of 0.88 and a B measurement of 1.01, allow for efficient installation even in space-constrained settings. The adapter is compatible with a range of fluids, as detailed in the accompanying fluid compatibility document.

SKU: 2025-4-5S

Supplier Part Number (MPN): 2025-4-5S

Alternate Part Numbers: C1AW51

Specifications

A
0.88
Alternate Part Numbers
Alternate Part Number C1AW51
Application
Marine/Military, Chemical Processing, Pulp and Paper Industries, Food and Beverage Processing, Off-Shore Drilling
B
1.01
Drop Dimension
1.22
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
0.50
End Type 1
NPTF
End Type 2
SAE 37
Minimum Working Temperature
-65
Supplier Part Number
2025-4-5S
Thread 1
1/4-18
Thread 2
1/2-20
Thread Sealant
No
Tube O.D.
0.31
Tube O.D.
0.31
Product Weight
0.15 lbs

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Product Questions & Answers (3)

Question by: Terry H on Feb 21, 2026, 2:02 PM
trying to hook a 1/4 npt female port to a jic hose end, is this the right elbow?
Answer by: Customer Support on Feb 23, 2026, 6:14 AM
For that hookup, it matches what you described. One side is 1/4-18 female NPT (NPTF internal pipe) and the other side is 1/2-20 male JIC with a 37 degree flare, and it’s a 90 degree elbow.
Question by: Terry W on Dec 11, 2025, 7:22 AM
Will this elbow adapter work okay in a hydraulic system on a fishing boat? Saltwater's a bear.
Answer by: Customer Support on Dec 13, 2025, 6:36 AM
This Eaton Aeroquip adapter is suitable for marine applications. Be sure to consult the fluid compatibility document to confirm it'll hold up with the specific fluids you're using.
Question by: Rick W on Apr 14, 2025, 8:27 AM
we run a pulp and paper operation and i keep second-guessing whether this fitting'll hold up in that kind of environment, is it actually rated for that application or just general industrial use?
Answer by: Customer Support on Apr 16, 2025, 6:11 AM
Pulp and paper is one of the specific applications this adapter is built for, along with chemical processing, food and beverage, marine, military, and offshore drilling. Those aren't just broad categories thrown on there, that list reflects real-world environments where corrosion resistance and reliable sealing matter. The 37-degree JIC flare on the male end combined with the female NPT connection gives you a solid mechanical seal that holds up where vibration and fluid exposure are ongoing concerns.