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Steel Adapter, 3/8-24 Male SAE O-Ring Boss (Straight Thread O-Ring) To 7/16-20 Male JIC 37 deg Flare, Straight

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Description & Features

Expertly crafted by Brennan Industries Inc this steel adapter ensures reliable connections for industrial fluid transfer systems. Engineered with a 3/8-24 male SAE O-Ring Boss and a 7/16-20 male JIC 37 flare it guarantees a secure leak-free fit.

Featuring durable construction this adapter is designed to withstand high-pressure applications. Its precise threading and O-ring boss interface enhance seal integrity reducing the risk of leaks. Ideal for achieving seamless integration in complex hydraulic setups.

Whether it's in heavy machinery or industrial operations this steel adapters robust build and accurate dimensions ensure optimal performance. The adapter's straight configuration simplifies the connection process making it a practical choice for various hydraulic systems.

Supplier Part Number: 6400-04-03-O

Specifications

A
1.17
Alternate Part Numbers
Alternate Part Number 202702-3-4S, Alternate Part Number 6400-04-03, Alternate Part Number A202702-3-4S, Alternate Part Number C1BX13, Alternate Part Number FMC102-1807, Alternate Part Number MI-00319197, Alternate Part Number MINO-00028F65329
Brand
Brennan Industries Inc
Brand
Brennan Industries
Pack Size
1.00
UOM
EA
Supplier Part Number
6400-04-03-O
Thread 1
3/8-24
Thread 2
7/16-20
Thread Sealant
No
Tube O.D.
0.25
Tube O.D.
0.25
Product Weight
0.04 lbs

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Product Questions & Answers (2)

Question by: Marvin W on Feb 20, 2026, 10:00 AM
Wondering if this adapter is good for high pressure in hydraulic systems?
Answer by: Customer Support on Feb 22, 2026, 6:24 AM
This steel adapter's durable construction is designed to handle high-pressure applications, ensuring a reliable and secure connection in demanding hydraulic setups.
Question by: Judy C on Sep 19, 2025, 1:37 PM
got a line running 1/4 inch tube off an ORB port and need to step up to a JIC fitting on the other end, this the right adapter for that?
Answer by: Customer Support on Sep 20, 2025, 8:14 PM
For a 1/4 inch tube application, this adapter lines up correctly. The JIC side is sized for 7/16-20 thread, which corresponds to a 1/4 inch tube OD on a 37 degree flare fitting. The other end is a 3/8-24 male SAE O-Ring Boss, so it threads directly into a female ORB port. The straight configuration keeps the connection simple with no angle to work around, which is handy when space isn't a concern and you just need a clean inline transition between those two fitting types.