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Steel Adapter, 1-11-1/2 Male NPT To 1-7/8-12 Male JIC 37 deg Flare, Straight

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Description & Features

This steel adapter facilitates a reliable straight connection between a 1-11-1/2 Male NPT thread and a 1-7/8-12 Male JIC 37 deg Flare. Manufactured by Eaton Aeroquip, this adapter ensures secure fluid transfer in demanding environments.

The Steel Adapter is suitable for applications including marine, military, chemical processing, pulp and paper, food and beverage processing, and off-shore drilling.

SKU: 2021-16-24S

Supplier Part Number (MPN): 2021-16-24S

Alternate Part Numbers: C1KU34

Specifications

Connection Size 1
1-1/2 in
Connection Size 2
1 in
Connection Type
Male JIC, MNPT
Connection Type 1
Male SAE 37 deg JIC Flare
Connection Type 2
Male NPTF
Dimension Standards
SAE 070102/J514
Dimensions
2.62 in L
Finish
Dura-Kote™
Fitting Type
Adapter
Hex Size
2 in
Material
Steel
Material Construction
Carbon Steel
Operating Temperature
-40
Series
2021 Series
Thread Size
1-7/8-12, 1-11-1/2

Product Questions & Answers (2)

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Question by: Merle E on Jul 11, 2025, 6:56 AM
Will this adapter hold up okay if I'm running hydraulic fluid through it pretty much constantly?
Answer by: Customer Support on Jul 12, 2025, 5:51 PM
This Eaton Aeroquip adapter is designed for applications like marine and military uses, chemical processing, and even offshore drilling, so it should handle continuous hydraulic fluid flow without any problems.
Question by: Dustin G on May 2, 2025, 6:20 PM
Got a 1-11/2 NPT pipe thread on a hydraulic manifold and need to tie into a 1-7/8-12 JIC line, this straight adapter the right call for that?
Answer by: Customer Support on May 3, 2025, 8:16 PM
That connection is exactly what this adapter handles. One end is 1-11/2 male NPT, the other is 1-7/8-12 male JIC with a 37 degree flare seat, and the straight configuration keeps things in line without adding any angle or offset. It's part of the Eaton Aeroquip 2021 Series, built in steel, so it's got the durability you'd expect for a working hydraulic system. Catalog number is C1KU34 if you need to cross-reference it anywhere.

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