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Steel Adapter, 1-11-1/2 Male NPT To 1-5/8-12 Male JIC 37 deg Flare, Straight

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Description & Features

Ideal for demanding environments, the Eaton Aeroquip Steel Adapter offers reliable connectivity for hydraulic systems. This straight adapter features a 1-11-1/2 male NPT to 1-5/8-12 male JIC 37-degree flare, ensuring compatibility with a range of applications, including marine, military, and off-shore drilling. Constructed from durable steel, this adapter is designed to withstand harsh conditions and maintain secure connections in chemical processing, pulp and paper industries, and food and beverage processing.

Part of the Danfoss / Eaton 2021 Series, this adapter's robust design and precise threading provide optimal performance under pressure. Its straight configuration allows for seamless integration into existing systems, enhancing operational efficiency. With a catalog number of C1AU85, this adapter is a trusted choice for professionals seeking reliability and quality.

SKU: 2021-16-20S

Supplier Part Number (MPN): 2021-16-20S

Alternate Part Numbers: 20011363, C1AU85, MI-00310373, MINO-00015F60092

Specifications

Connection Size 1
1-1/4 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
2.42 in L
Finish
Dura-Kote™
Fitting Type
Adapter
Hex Size
1.688 in
Material
Steel
Material Construction
Carbon Steel
Operating Temperature
-40
Series
2021 Series
Thread Size
1-5/8-12 x 1-11-1/2

Product Questions & Answers (2)

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Question by: Diane S on Jan 31, 2026, 6:14 PM
got a fitting with 1-11-1/2 male pipe threads on one side and a 1-5/8-12 male JIC on the other, is that what this adapter is?
Answer by: Customer Support on Feb 2, 2026, 2:15 PM
You’re describing the same thread setup as this part. It is a straight steel adapter with a 1-11-1/2 male NPTF end and a 1-5/8-12 male SAE 37 degree (JIC) flare end.
Question by: Harvey W on Nov 30, 2025, 8:48 PM
got a 1 NPT pipe thread on my manifold block and need to hook up a JIC 37 degree flare line, this adapter cover that transition straight through?
Answer by: Customer Support on Dec 2, 2025, 3:07 PM
That's exactly what this fitting handles. One end is 1-11/2 male NPT for the pipe side, and the other is 1-5/8-12 male JIC 37 degree flare for the hydraulic line connection. No elbow, no offset, just a straight through configuration. Steel construction keeps it solid in demanding hydraulic hydraulic connections setups, and it's part of the Eaton Aeroquip 2021 series which is well established in industrial and mobile hydraulic work.

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