Steel Adapter, 7/8-14 Female JIC 37 deg Flare Swivel To 9/16-18 Male JIC 37 deg Flare, Straight

Description & Features

Manufactured from steel and built for SAE 37-degree flare connections, this Eaton Aeroquip 221501 Series Steel Adapter, 7/8-14 Female JIC 37 deg Flare Swivel To 9/16-18 Male JIC 37 deg Flare, Straight is a straight reducer adapter designed to connect mismatched JIC thread sizes within hydraulic lines. The swivel feature on the female end simplifies installation by allowing the fitting to rotate during assembly without twisting the connected line.

Part of Eaton Aeroquip's 221501 Series, this adapter is catalogued under reference C1BC61 and suits applications where a 7/8-14 female JIC swivel must transition to a 9/16-18 male JIC port in a straight inline configuration. The steel construction provides durability suitable for demanding industrial hydraulic environments.

SKU: 221501-10-6S

Supplier Part Number (MPN): 221501-10-6S

Alternate Part Numbers: C1BC61, MI-00315803, MINO-00015F63935

Specifications

a Dimensions
1.03 in
Connection Size 1
5/8 in
Connection Size 2
3/8 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
1.62 in L
Finish
Dura-Kote™
Fitting Type
Adapter
Material
Steel
Material Construction
Carbon Steel
Operating Temperature
-65
Series
221501 Series
Thread Size
7/8-14 x 9/16-18
Tube OD
3/8 in

Product Questions & Answers (1)

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Question by: Ross W on Aug 25, 2025, 7:09 AM
trying to hook a 7/8-14 JIC female swivel to a 9/16-18 JIC male, is this the straight reducer i need?
Answer by: Customer Support on Aug 26, 2025, 10:04 AM
Use it when you need to step down between two SAE 37 degree JIC flare sizes. One side is a 7/8-14 female JIC 37 degree flare swivel, and the other side is a 9/16-18 male JIC 37 degree flare, in a straight adapter body.

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