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Steel Adapter, 5/16-24 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

This steel adapter from Brennan Industries Inc is engineered to meet the specific requirements of Straight Thread O-Ring to 37deg; Flare connections. It features a robust construction conducive for high-pressure applications.

Designed for reliability, it includes a 5/16-24 male SAE O-Ring Boss on one end and a 7/16-20 male JIC 37deg; flare on the other end, enabling efficient fluid transfer. The absence of thread sealant ensures compatibility with a variety of systems.

The adapter fits tubes with an outer diameter of 0.25 inches, offering versatility in industrial applications. Its configuration promotes leak-free performance and durability under demanding conditions.

MPN: 6400-04-02-O

Supplier Part Number: 6400-04-02-O

Specifications

A
1.13
Alternate Part Numbers
Alternate Part Number 6400-04-02, Alternate Part Number A202702-2-4S, Alternate Part Number C1EN67, Alternate Part Number MI-01604052, Alternate Part Number MINO-00028Q18757
Brand
Brennan Industries Inc
Brand
Brennan Industries
Pack Size
1.00
UOM
EA
Supplier Part Number
6400-04-02-O
Thread 1
5/16-24
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: Lee B on Aug 20, 2025, 1:08 PM
got a 1/4 inch tube line coming off a hydraulic valve with an ORB port, will this adapter let me tie into a JIC fitting on the other end without needing extra pieces in between?
Answer by: Customer Support on Aug 22, 2025, 7:50 AM
That's exactly the job this adapter handles. One end is a 5/16-24 Male SAE O-Ring Boss, which threads directly into a straight-thread ORB port. The other end is a 7/16-20 Male JIC 37-degree flare, sized for 1/4 inch tube. So yes, you get a direct one-piece connection between those two thread types with no additional fittings required.
Question by: Dwayne C on Oct 18, 2025, 2:09 PM
Got a line running 1/4 inch OD tube that needs to tie into an SAE O-Ring Boss port, does this adapter actually cover that setup?
Answer by: Customer Support on Oct 20, 2025, 6:47 AM
That's what this one handles. One end is a 5/16-24 male SAE O-Ring Boss, which threads straight into an ORB port, and the other end is a 7/16-20 male JIC 37 degree flare, which is the standard fitting for 1/4 inch OD tubing. The overall length runs 1.13 inches, so it's a compact piece that won't take up much room in tight spots.