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Steel Adapter, 1-5/16-12 Female JIC 37 deg Flare Swivel To 9/16-18 Male JIC 37 deg Flare, Straight

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Description & Features

This steel adapter facilitates connections between different JIC (Joint Industry Council) 37-degree flare fittings. It connects a 1-5/16-12 female JIC 37-degree flare swivel to a 9/16-18 male JIC 37-degree flare in a straight configuration.

Designed for diverse applications, this Eaton Aeroquip fitting ensures secure and reliable connections in hydraulic systems.

SKU: 221501-16-6S

Supplier Part Number (MPN): 221501-16-6S

Alternate Part Numbers: C1BC66, MI-00315862, MINO-00015F63949

Specifications

A
1.16
Alternate Part Numbers
Alternate Part Number C1BC66, Alternate Part Number MI-00315862, Alternate Part Number MINO-00015F63949
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 2
0.56
End Type 1
SAE 37
End Type 2
SAE 37
Minimum Working Temperature
-65
Supplier Part Number
221501-16-6S
Thread 1
1-5/16-12
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
0.34 lbs

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Product Questions & Answers (4)

Question by: Denise C on Dec 30, 2025, 1:53 PM
trying to swap out an old reducer, will this one go from a 1-5/16-12 female JIC swivel down to a 9/16-18 male JIC?
Answer by: Customer Support on Jan 1, 2026, 6:52 AM
Match the threads and flare style and you are on the right track. This adapter is a straight reducer with a 1-5/16-12 female JIC 37 degree flare swivel on one end and a 9/16-18 male JIC 37 degree flare on the other.
Question by: Wade B on Apr 27, 2025, 9:10 PM
Will this adapter work to connect a 9/16-18 male JIC to a 1-5/16-12 female JIC?
Answer by: Customer Support on Apr 29, 2025, 8:38 AM
That's exactly what it's made for. It adapts a 1-5/16-12 female JIC 37-degree flare swivel to a 9/16-18 male JIC 37-degree flare in a straight line.
Question by: Lynn H on Aug 27, 2025, 2:50 PM
got a hose end that’s 1-5/16-12 female JIC swivel, and the port i need to hit is 9/16-18 male JIC. is this the right reducer or am i backwards
Answer by: Customer Support on Aug 28, 2025, 5:39 PM
Function-wise, it’s the reducer that bridges those two JIC 37 degree flare sizes in a straight adapter. One side is 1-5/16-12 female JIC 37 degree flare swivel, and the other side is 9/16-18 male JIC 37 degree flare, so it matches what you described.
Question by: Tommy Y on Aug 16, 2025, 6:38 AM
trying to figure out if this'll work as a reducer between my larger JIC line and a smaller fitting downstream, the size jump from 1-5/16-12 down to 9/16-18, is that what this thing does?
Answer by: Customer Support on Aug 18, 2025, 6:28 AM
That's what it handles. The female end accepts a 1-5/16-12 JIC 37 degree flare connection and the male end steps down to a 9/16-18 JIC 37 degree flare. Both ends use the same SAE 37 degree seat angle, so you're getting a straight reducer that keeps the JIC sealing geometry consistent on both sides. The swivel on the female end also makes it easier to thread everything up without fighting the line for alignment.