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

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

Connection Type Male 37 deg JIC	Dimension Standards SAE 070109/J514	Dimensions 0.8 in L	Finish Dura-Kote™	Fitting Type Plug	Hex Size 0.563 in	Material Steel	Material Construction Carbon Steel	Maximum Operating Pressure 4000 psi	Operating Temperature -40 to 250 deg F	Series 900599 Series	Thread Sealant Without Thread Sealant	Thread Size 1/2-20

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.

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

Description & Features

Specifications

Related Documents

Product Questions & Answers (2)