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Steel Adapter, 9/16-18 Female JIC 37 deg Flare Swivel To 7/16-20 Male JIC 37 deg Flare, Straight

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Description & Features

The Steel Adapter, crafted by Eaton Aeroquip, is engineered for precision and durability. This adapter features a 9/16-18 female JIC 37-degree flare swivel and a 7/16-20 male JIC 37-degree flare, facilitating seamless connections between hydraulic components. Made from high-quality steel, it ensures reliable performance in demanding industrial environments. With its straight design, this adapter is ideal for applications requiring robust and leak-free connections under pressure.

This product is part of the Danfoss / Eaton 221501 Series, known for its compatibility with a wide range of hydraulic fluids. The adapter's technical specifications, including thread sizes and flare angles, are optimized for versatility and ease of integration into existing systems. It is a crucial component for professionals seeking dependable fluid conveyance solutions in various industrial contexts.

SKU: 221501-6-4S

Supplier Part Number (MPN): 221501-6-4S

Alternate Part Numbers: C1BC69, MI-00315779, MINO-00015F63931

Specifications

a Dimensions
0.97 in
Connection Size 1
3/8 in
Connection Size 2
1/4 in
Connection Type
Female JIC Swivel, Male JIC
Connection Type 1
Female SAE 37 deg JIC Flare Swivel
Connection Type 2
Male SAE 37 deg JIC Flare
Dimension Standards
SAE 070123/J514
Dimensions
1.4 in L
Finish
Dura-Kote™
Fitting Type
Adapter
Material
Steel
Material Construction
Carbon Steel
Operating Temperature
-65
Series
221501 Series
Thread Size
9/16-18, 7/16-20
Tube OD
1/4 in

Product Questions & Answers (3)

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Question by: Shane M on Dec 25, 2025, 7:31 AM
Will this adapter work to connect a 9/16-18 female JIC to a 7/16-20 male JIC fitting?
Answer by: Customer Support on Dec 27, 2025, 6:26 AM
Yes, that's exactly what this adapter is for. It's designed to go between those two specific sizes of JIC fittings.
Question by: Earl H on Apr 6, 2025, 6:02 PM
i’ve got a hose end with a 9/16-18 JIC female swivel, will this adapter let me step down to a 7/16-20 JIC male?
Answer by: Customer Support on Apr 8, 2025, 6:55 AM
Function-wise, that’s exactly what it is. It’s a straight reducer adapter that goes from a 9/16-18 female JIC 37 degree flare swivel on one side to a 7/16-20 male JIC 37 degree flare on the other.
Question by: Ralph B on Feb 19, 2026, 6:39 AM
Got a 9/16-18 female JIC fitting on my hydraulic line and need to drop down to a 7/16-20 male JIC connection. this the right part for that?
Answer by: Customer Support on Feb 20, 2026, 4:56 PM
That's what this adapter does. It connects a 9/16-18 female JIC 37 degree flare swivel on one end to a 7/16-20 male JIC 37 degree flare on the other, straight configuration. Both ends use the standard SAE 37 degree flare seating, so as long as your existing fittings match those thread sizes and flare angles, you're set. It's a reducer adapter, so it's purpose-built for stepping down between those two JIC sizes in a single piece.

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