Manufactured from steel, this straight reducer adapter connects a 3/4-16 female JIC 37° flare swivel to a 7/16-20 male JIC 37° flare, making it well suited for hydraulic lines where a reduction in thread size is required at a fixed-angle connection point. The swivel end allows for easier assembly and alignment without twisting the connected hose or tube.
The Steel Adapter, 3/4-16 Female JIC 37 deg Flare Swivel To 7/16-20 Male JIC 37 deg Flare, Straight is part of the Eaton Aeroquip 221501 Series and carries catalog number C1BC70. It is designed for use in hydraulic systems requiring reliable SAE 37° flare connections across mismatched port sizes.
SKU: 221501-8-4S
Supplier Part Number (MPN): 221501-8-4S
Alternate Part Numbers: 221501-08-4S, C1BC70, MI-00315786, MINO-00015F63932
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Specifications
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Alternate Part Numbers
Alternate Part Number221501-08-4S, Alternate Part Number C1BC70, Alternate Part Number MI-00315786, Alternate Part Number MINO-00015F63932
got a hose end that’s 3/4-16 female JIC swivel, will this step it down to a 7/16-20 male JIC flare?
Answer by: Customer Support on May 21, 2025, 7:36 AM
Yes, it’s a straight reducer adapter that goes from a 3/4-16 female JIC 37 degree flare swivel on one side to a 7/16-20 male JIC 37 degree flare on the other.
Question by: Rod G on Jan 18, 2026, 10:52 AM
Will this adapter work to connect a 3/4-16 female JIC to a 7/16-20 male JIC fitting?
Answer by: Customer Support on Jan 20, 2026, 6:33 AM
Yes, this adapter is designed to connect a 3/4-16 female JIC 37 degree flare swivel fitting to a 7/16-20 male JIC 37 degree flare fitting in a straight configuration.