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04MFS-12MAORB STRAIGHT

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Description & Features

This straight fitting features a 1/4 inch tube OD connection. The 04MFS-12MAORB STRAIGHT fitting has a Brennan A drill size of 0.172 inches and A thread size of 9/16-18.

The B drill size is 0.609 inches, and the B thread size is 1-1/16-12. It features a 1.250 inch H hex and a length of 1.638 inches. This fitting is part of the FS6400-O series.

SKU: FS6400-04-12-O

Supplier Part Number (MPN): FS6400-04-12-O

Specifications

Brand
BRENNAN
a Drill Dimensions
0.172 in
b Drill Dimensions
0.609 in
Connection Size 1
1/4 in
Connection Size 2
3/4 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
1.638 in L
Finish
Trivalent Zinc-Plated
Fitting Type
Adapter
Hex Size
1-1/4
Material
Steel
Material Construction
AISI 12L14/C1045 Steel
Maximum Operating Pressure
6000 psi
Operating Temperature
-40 to 250 deg F
Series
FS6400-O Series
Thread Size
1-1/16-12 x 9/16-18
Tube OD
1/4 in
Tube Outside Diameter
1/4 in

Product Questions & Answers (2)

Question by: Eddie B on Nov 30, 2025, 7:27 AM
what's the tube OD on this fitting, and does that 1-1/16-12 thread on the B side mean it's an ORB port end?
Answer by: Customer Support on Dec 1, 2025, 9:08 AM
The tube OD is 1/4 inch, and yes, that 1-1/16-12 thread on the B end is your ORB port connection. The A end runs a 9/16-18 thread, which is the male flareless bite-type side for the 1/4 inch tube. So you've got a straight fitting that steps from a smaller tube connection on one end to a larger ORB port on the other. Pretty common setup when you're hydraulic connections into a manifold or valve body with a bigger port.
Question by: Pete M on Jan 31, 2026, 6:03 AM
trying to match up a straight fitting i pulled off, what tube size is this one set up for
Answer by: Customer Support on Feb 2, 2026, 6:06 AM
For the tube side, it is made for 1/4 inch tube OD.

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