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Steel Adapter, 3/4-16 Male SAE O-Ring Boss (Straight Thread O-Ring) To 1-5/16-12 Male JIC 37 deg Flare, Straight

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Description & Features

This steel adapter crafted by Brennan Industries Inc is a reliable component for industrial applications involving fluid conveyance. The adapter connects a 3/4-16 Male SAE O-Ring Boss (Straight Thread O-Ring) to a 1-5/16-12 Male JIC 37-degree flare ensuring a secure and leak-free connection.

Engineered with precision it features high-quality steel construction for durability and optimal performance in demanding environments. This adapter is designed to handle the rigorous conditions often encountered in hydraulic systems maintaining integrity under pressure.

The straightforward design enables easy installation and a consistent seal without requiring additional thread sealant. Suitable for various industrial contexts it ensures compatibility and efficiency in your hydraulic setups.

Produced under stringent quality controls this adapter upholds the standards expected from Brennan Industries providing a dependable solution for fluid transfer needs. The distinct threading specifications (3/4-16 and 1-5/16-12) cater to specific dimensional requirements ensuring a precise fit.

Supplier Part Number: 6400-16-08-O

Specifications

a Dimensions
1.89 in
Connection Size 1
1/2 in
Connection Size 2
1 in
Connection Type
Male JIC, Male SAE ORB
Connection Type 1
Male SAE ORB
Connection Type 2
Male SAE 37 deg JIC Flare
Dimension Standards
SAE J1926/J514
Dimensions
2.01 in L
Finish
Trivalent Zinc-Plated
Fitting Type
Adapter
Hex Size
1-3/8 in
Material
Steel
Material Construction
AISI 12L14/C1045 Steel
Maximum Operating Pressure
4500 psi
Operating Temperature
-40 to 250 deg F
Series
6400-O Series
Thread Sealant
Without Thread Sealant
Thread Size
1-5/16-12, 3/4-16
Tube Outside Diameter
1 in

Product Questions & Answers (2)

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Question by: Lance S on May 16, 2025, 4:35 PM
Will this adapter handle hydraulic pressures without leaking?
Answer by: Customer Support on May 18, 2025, 6:22 AM
Engineered to maintain integrity under pressure, this steel adapter provides a secure and leak-free connection in hydraulic systems.
Question by: Bobby J on Oct 22, 2025, 10:59 AM
Got a JIC fitting on one end of my line and an ORB port on the other, does this adapter go between the two without needing tape or sealant on the threads?
Answer by: Customer Support on Oct 23, 2025, 8:26 PM
The SAE O-Ring Boss side handles sealing through the o-ring itself, so no thread sealant is needed there. The JIC 37-degree flare end seals by metal-to-metal contact at the flare seat. Between the two, you get a secure, leak-free connection without adding tape or compound to either end.

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