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04MFS-08MAORB STRAIGHT

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Description & Features

This adapter from Brennan Industries Inc is engineered to meet the high standards of reliability and durability required in industrial applications. With precise A and B thread measurements of 9/16-18 and 3/4-16 respectively the 04MFS-08MAORB Straight adapter is crafted for secure and efficient connections.

Designed with a hex dimension of 0.875 inches and an overall length of 1.321 inches this part provides robust support and long-lasting performance. This adapter part of the FS6400-O series ensures seamless integration within various systems making it an essential component for demanding projects. The 1/4 inch tube O.D. specification further enhances its compatibility with a range of setups.

Whether you are upgrading existing equipment or setting up new installations the 04MFS-08MAORB Straight adapter offers a reliable solution. Its straightforward configuration simplifies the installation process while its dimensions including a 0.172 inch A drill and a 0.378 inch B drill contribute to its accurate fit and function.

Supplier Part Number: FS6400-04-08-O

Specifications

Brand
BRENNAN
a Drill Dimensions
0.172 in
b Drill Dimensions
0.378 in
Connection Size 1
1/4 in
Connection Size 2
1/2 in
Connection Type
Male ORFS, Male SAE ORB
Connection Type 1
Male SAE ORFS
Connection Type 2
Male SAE ORB
Dimension Standards
SAE J1453, SAE J1926
Dimensions
1.321 in L
Finish
Trivalent Zinc-Plated
Fitting Type
Adapter
Hex Size
7/8 in
Material
Steel
Material Construction
AISI 12L14/C1045 Steel
Operating Temperature
-40 to 250 deg F
Series
FS6400-O Series
Thread Size
3/4-16, 9/16-18
Tube OD
1/4 in
Tube Outside Diameter
1/4 in

Product Questions & Answers (3)

Question by: Shane H on Oct 29, 2025, 3:33 PM
trying to match up a straight adapter i’ve got here, what are the thread sizes on the A and B ends for this one
Answer by: Customer Support on Oct 30, 2025, 6:40 PM
For fit-up, the A thread is 9/16-18 and the B thread is 3/4-16.
Question by: Dwayne G on Dec 7, 2025, 9:49 AM
What size is the tube that this adapter fits?
Answer by: Customer Support on Dec 8, 2025, 7:23 PM
This adapter is made for a 1/4 inch outside diameter tube.
Question by: Vince B on Mar 29, 2026, 9:10 PM
does the 1/4 inch tube O.D. on this thing mean it'll hook straight up to standard 1/4 inch tubing, or is there more to fittin it right?
Answer by: Customer Support on Mar 31, 2026, 6:34 PM
For a 1/4 inch O.D. tube connection, this adapter is built to accommodate exactly that size. The A thread is 9/16-18 and the B thread is 3/4-16, so the tube side and the port side each have their own thread spec. As long as your tubing matches the 1/4 inch O.D. and your port is a 3/4-16 ORB, the fit should be straightforward with no extra adapters needed in between.

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