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

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Description & Features

Manufactured from steel, this straight adapter is designed for hydraulic, instrumentation, and chemical processing systems requiring a reliable 37-degree flare connection. The Steel Adapter, 1-1/16-12 Male JIC 37 Deg Flare Hex Plug features a male SAE 37-degree flare end on a 1-1/16-12 thread, conforming to the Danfoss Power Solutions (Aeroquip) 900599 Series standard. With a tube O.D. of 0.75 inches and a minimum working temperature rating of -40°F, it is suited for demanding fluid power environments where temperature extremes and system integrity are critical considerations. No thread sealant is required for installation.

Catalogued under Danfoss Power Solutions as model C1CB15 within the 37° Flare Union Steel Adapters product line, this fitting carries an EAR99 export classification and is UNSPSC coded 40183100 for procurement and sourcing compatibility.

SKU: 900599-12S

Supplier Part Number (MPN): 900599-12S

Alternate Part Numbers: 20011207, C1CB15, MI-00317271, MINO-00015F64576

Specifications

A
1.28
Alternate Part Numbers
Alternate Part Number 20011207, Alternate Part Number C1CB15, Alternate Part Number MI-00317271, Alternate Part Number MINO-00015F64576, Alternate Part Number MINO-00925X11825
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
900599-12S
Thread 2
1-1/16-12
Thread Sealant
No
Tube O.D.
0.75
Tube O.D.
0.75
Product Weight
0.10 lbs

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Product Questions & Answers (4)

Question by: Lyle M on Jul 25, 2025, 1:15 PM
what size tube does this plug fit, and is it the right one for a 3/4 inch line?
Answer by: Customer Support on Jul 26, 2025, 9:03 PM
For a 3/4 inch OD tube, this is the correct plug. The fitting is built around a 0.75 inch tube OD spec, with 1-1/16-12 male JIC 37 degree flare threads. That thread size is standard for 3/4 inch tubing in JIC hydraulic systems, so if your line matches those dimensions you are in good shape.
Question by: Harvey E on Feb 3, 2026, 2:45 PM
Will this plug work for hydraulic systems in chemical processing?
Answer by: Customer Support on Feb 5, 2026, 6:01 AM
This adapter is suitable for hydraulic, instrumentation, and chemical processing systems.
Question by: Todd S on Apr 7, 2025, 8:08 AM
i’ve got a JIC flare port that’s 1-1/16-12, is this the right plug to cap it off?
Answer by: Customer Support on Apr 8, 2025, 9:44 AM
For a 1-1/16-12 male JIC 37 degree flare connection, this straight steel hex plug matches that thread and flare style, so it’s meant to cap off a JIC 37 degree flare port in that size.
Question by: Jimmy P on Jun 8, 2025, 10:50 AM
catalog number on this one is C1CB15 -- that the same as the 900599-12S or are those two separate part numbers for different things?
Answer by: Customer Support on Jun 10, 2025, 6:05 AM
Same part, two different ways to reference it. The SKU 900599-12S and catalog number C1CB15 both point to this exact adapter. Eaton Aeroquip just uses both numbering systems depending on which catalog or ordering platform you're working from. Either one will pull up the same 1-1/16-12 male JIC 37 degree flare hex plug.