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Steel Adapter, 1/2-20 Male JIC 37 deg Flare Hex Plug

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Description & Features

This Danfoss / Eaton 900599 Series straight adapter is a 37° Flare Plug and part of the 37° Flare Union Steel Adapters product model line. Constructed from steel, it's designed for use in hydraulic, instrumentation, and chemical processing systems.

The Steel Adapter, 1/2-20 Male JIC 37 deg Flare Hex Plug features a 1/2-20 thread, a 0.5 End Size 1, and a 0.31 Tube O D. It is suitable for applications with a minimum working temperature of -40.

SKU: 900599-5S

Supplier Part Number (MPN): 900599-5S

Alternate Part Numbers: C1CB22, MI-00317228, MINO-00015F64572

Specifications

A
0.80
Alternate Part Numbers
Alternate Part Number C1CB22, Alternate Part Number MI-00317228, Alternate Part Number MINO-00015F64572
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 Size 1
0.50
End Type 1
SAE 37
End Type 2
SAE 37
Minimum Working Temperature
-40
Supplier Part Number
900599-5S
Thread 2
1/2-20
Thread Sealant
No
Tube O.D.
0.31
Tube O.D.
0.31
Product Weight
0.02 lbs

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Product Questions & Answers (2)

Question by: Dwight R on Feb 16, 2026, 7:03 AM
what applications is this adapter typically used in?
Answer by: Customer Support on Feb 17, 2026, 6:23 PM
Hydraulic systems, instrumentation setups, and chemical processing lines are the main homes for this fitting. The 37 degree JIC flare design is a real workhorse connection style across all three of those environments, and the hex plug configuration makes it handy for capping off a port or unused line without a lot of fuss.
Question by: Tammy H on May 8, 2025, 9:52 PM
So this is just a plug, right? Not a cap or anything?
Answer by: Customer Support on May 10, 2025, 12:44 PM
That's correct, this is a 37-degree flare hex plug. It's designed to seal off a 1/2-20 male JIC fitting.