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Steel Adapter, 1-5/16-12 Male JIC 37 deg Flare Hex Plug

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Description & Features

Manufactured from steel and rated for a minimum working temperature of -40°F, this fitting is built for reliable performance in hydraulic, instrumentation, and chemical processing systems. The Steel Adapter, 1-5/16-12 Male JIC 37 Deg Flare Hex Plug features a 1-5/16-12 male SAE 37° flare thread end and is designed to terminate or cap hydraulic lines where fluid flow must be blocked at a port. The hex plug configuration allows for standard wrench installation, ensuring consistent torque application during assembly.

Supplied by Danfoss Power Solutions (formerly Aeroquip), this adapter corresponds to catalog number C1CB16 and is part of the 900599 series of straight 37° flare plug adapters. With a 1-inch tube O.D. rating and no thread sealant required, it is suited for use where a clean, dry-seal flare connection is specified.

SKU: 900599-16S

Supplier Part Number (MPN): 900599-16S

Alternate Part Numbers: C1CB16, MI-00317288, MINO-00015F64578

Specifications

A
1.33
Alternate Part Numbers
Alternate Part Number C1CB16, Alternate Part Number MI-00317288, Alternate Part Number MINO-00015F64578, Alternate Part Number MINO-00925X11826
Application
Other - Hydraulic, instrumentation, and chemical processing systems
Brand
Danfoss Power Solutions (II LLC Aeroquip)
Brand
Aeroquip
Pack Size
1.00
UOM
EA
End Gender 1
13554
End Gender 2
13555
End Type 1
SAE 37
End Type 2
SAE 37
Minimum Working Temperature
-40
Supplier Part Number
900599-16S
Thread 2
1-5/16-12
Thread Sealant
No
Tube O.D.
1
Tube O.D.
1
Product Weight
0.21 lbs

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Product Questions & Answers (3)

Question by: Gene C on Jun 24, 2025, 5:21 PM
Will this plug work okay in a hydraulic setup for chemical processing?
Answer by: Customer Support on Jun 26, 2025, 12:57 PM
Application-wise, yes, these steel adapters are designed for hydraulic, instrumentation, and chemical processing systems.
Question by: Dwayne M on Jun 11, 2025, 12:28 PM
what's the thread size on this plug, and is it a JIC fitting or something else?
Answer by: Customer Support on Jun 13, 2025, 7:49 AM
The male end runs a 1-5/16-12 thread and yes, it uses a 37 degree JIC flare seat. That flare angle is the standard for JIC connections, so it'll mate up correctly with any female JIC 37 degree flare port of the same size. It's a straight hex plug, meaning there's no elbow or reducer involved, just a clean termination point for an open port.
Question by: Scott R on Feb 14, 2026, 11:26 AM
i’ve got a 1-5/16-12 JIC flare port i need to cap off, is this the right plug for that?
Answer by: Customer Support on Feb 15, 2026, 1:49 PM
With a 1-5/16-12 male JIC 37 degree flare, this part is meant to plug a matching female JIC 37 degree flare connection in that same thread size.