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Steel Adapter, 9/16-18 Male SAE O-Ring Boss (Straight Thread O-Ring) To 1/4-18 Male NPT, 90 deg Elbow

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Description & Features

The Brennan Industries Inc Steel Adapter is designed for specialized industrial applications. This adapter features a 9/16-18 male SAE O-Ring Boss (Straight Thread O-Ring) connection on one end transitioning to a 1/4-18 male NPT forming a precise 90-degree elbow angle.

Made from durable steel this adapter ensures reliability and longevity in demanding environments. The 0.38-inch tube O.D. makes it suitable for various industrial setups requiring secure connections. Both connections 9/16-18 and 1/4-18 guarantee a seamless fit without the need for additional thread sealants optimizing installation efficiency.

Ideal for high-pressure applications where robust and leak-proof connections are crucial. Utilized in machinery and equipment where precise angles and durable connections are necessary.

MPN: 6806-06-04-NWO

Supplier Part Number: 6806-06-04-NWO-FG

Specifications

Connection Size 1
3/8 in
Connection Size 2
1/4 in
Connection Type
Male SAE ORB, MNPT
Connection Type 1
Male SAE ORB
Connection Type 2
MNPTF
Dimension Standards
SAE J1926/J476
Dimensions
1-1/4 in L
Finish
Trivalent Zinc-Plated
Fitting Type
90 deg Elbow
Hex Size
11/16 in
l Dimensions
1-1/4 in
Material
Steel
Material Construction
AISI C1045 Steel
Maximum Operating Pressure
6000 psi
n Dimensions
1.09 in
Operating Temperature
-40 to 250 deg F
Series
6806-NWO-FG Series
Thread Sealant
Without Thread Sealant
Thread Size
1/4-18 x 9/16-18
Tube OD
3/8 in
Tube Outside Diameter
0.38 in

Product Questions & Answers (2)

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Question by: Dwight H on Jun 21, 2025, 9:26 AM
Just want to make sure, this is a 90 degree elbow, right? Need somethin' that makes a turn.
Answer by: Customer Support on Jun 22, 2025, 7:37 PM
Correct, this steel adapter forms a precise 90-degree elbow, transitioning from a 9/16-18 male SAE O-Ring Boss to a 1/4-18 male NPT connection. It's designed for applications where you need to change direction.
Question by: Bobby M on Dec 19, 2025, 5:13 PM
does this adapter need any thread sealant on either end, or is it good to go as-is?
Answer by: Customer Support on Dec 21, 2025, 6:54 AM
The SAE O-Ring Boss end seals through the o-ring itself, so no thread sealant is needed there. The male NPT side also connects without requiring additional sealants, according to the product specs. Both ends are set up to give you a secure, leak-proof fit right out of the box.

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