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FFSS-MORB STRAIGHT

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Description & Features

This FFSS-MORB STRAIGHT fitting features a 5/8 inch tube OD.

It has a Brennan A drill size of 0.453 inches and a Brennan A thread size of 1-14. The B port has a 0.609 inch drill size and 1-1/16-12 MORB thread. The fitting’s C hex measures 1.125 inches and the H hex is 1.250 inches. Its L length is 2.218 inches.

SKU: FS6540-10-12-O

Supplier Part Number (MPN): FS6540-10-12-O

Specifications

Brand
BRENNAN
a Drill Dimensions
0.453 in
b Drill Dimensions
0.609 in
Connection Size 1
5/8 in
Connection Size 2
3/4 in
Connection Type
Female ORFS Swivel, Male SAE ORB
Connection Type 1
Female SAE ORFS Swivel
Connection Type 2
Male SAE ORB
Dimension Standards
SAE J1453, SAE J1926
Dimensions
2.218 in L
Finish
Trivalent Zinc-Plated
Fitting Type
Adapter
Hex Size
1-1/4 x 1-1/8 in
Material
Steel
Material Construction
AISI 12L14/C1045 Steel
Maximum Operating Pressure
6000 psi
Operating Temperature
-40 to 250 deg F
Series
FS6540-O Series
Thread Size
1-14 x 1-1/16-12
Tube Outside Diameter
5/8 in

Product Questions & Answers (1)

Question by: Tommy H on Mar 26, 2026, 7:23 AM
I'm just trying to make sure I'm getting the right size... that 5/8 inch tube OD, is that the outer diameter?
Answer by: Customer Support on Mar 28, 2026, 6:45 AM
That's correct. The 5/8 inch measurement refers to the outer diameter of the tube that this fitting is designed to connect.

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