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Steel Adapter, 1-1/16-12 Female JIC 37 deg Flare Swivel To 9/16-18 Male JIC 37 deg Flare, Straight

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Description & Features

Designed for reducing connection size in hydraulic lines, the Steel Adapter, 1-1/16-12 Female JIC 37 Deg Flare Swivel To 9/16-18 Male JIC 37 Deg Flare, Straight is part of the Eaton Aeroquip 221501 Series. The swivel female end allows for easier installation and alignment without requiring the mating line to rotate, while both ends conform to SAE 37-degree flare standards for reliable metal-to-metal sealing.

Constructed from steel, this straight reducer adapter steps down from a 1-1/16-12 female JIC swivel connection to a 9/16-18 male JIC fitting. It carries Eaton Aeroquip catalog number C1BC62 and is suited for hydraulic systems where mismatched JIC thread sizes must be joined in a straight-line configuration.

SKU: 221501-12-6S

Supplier Part Number (MPN): 221501-12-6S

Alternate Part Numbers: C1BC62, MI-00315818, MINO-00015F63938

Specifications

A
1.09
Alternate Part Numbers
Alternate Part Number C1BC62, Alternate Part Number MI-00315818, Alternate Part Number MINO-00015F63938
Application
Other
Brand
Danfoss Power Solutions (II LLC Aeroquip)
Brand
Aeroquip
Pack Size
1.00
UOM
EA
End Gender 1
13553
End Gender 2
13556
End Size 1
0.75
End Size 2
0.38
End Type 1
SAE 37
End Type 2
SAE 37
Minimum Working Temperature
-65
Supplier Part Number
221501-12-6S
Thread 1
1-1/16-12
Thread 2
9/16-18
Thread Sealant
No
Tube I.D. 2
0.30
Tube O.D.
0.38
Tube O.D.
0.38
Product Weight
0.23 lbs

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Product Questions & Answers (3)

Question by: Warren R on Nov 20, 2025, 10:46 AM
i got a hose end that’s 1-1/16-12 female JIC swivel, will this adapter step me down to a 9/16-18 male JIC without any funny business
Answer by: Customer Support on Nov 21, 2025, 5:07 PM
For a straight reducer between two JIC 37 degree flare connections, this one matches a 1-1/16-12 female JIC 37 degree flare swivel on one end and a 9/16-18 male JIC 37 degree flare on the other.
Question by: Vince E on Dec 20, 2025, 7:10 PM
what's the difference in thread size between the two ends on this adapter? trying to figure out if it'll work as a reducer in my line.
Answer by: Customer Support on Dec 22, 2025, 6:39 AM
One end is a 1-1/16-12 female JIC 37 degree flare swivel and the other is a 9/16-18 male JIC 37 degree flare. Both ends use the same SAE 37 degree flare seating angle, so you're keeping a consistent connection type while stepping down in thread size. That makes it a straight reducer adapter, not a conversion between different fitting standards.
Question by: Johnny B on Jan 26, 2026, 3:49 PM
What size are each of the ends on this adapter? Just want to make sure it will fit my setup.
Answer by: Customer Support on Jan 28, 2026, 6:43 AM
You've got a 1-1/16-12 female JIC 37 degree flare swivel on one side, and a 9/16-18 male JIC 37 degree flare on the other.