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12MFS-12MFS BULKHEAD UNION

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Description & Features

This bulkhead union from Brennan Industries Inc is engineered for high standards and reliability. With 1-3/16-12 threads and a 0.609 drill size for both A1 and A2 sections it ensures optimal performance.

The 1.500-inch hex size provides robust handling capabilities. A series FS2700 component it measures 2.720 inches in length guaranteeing secure connections.

Suitable for industrial contexts requiring precise and dependable unions the 3/4 tube outer diameter fits seamlessly into specified configurations.

Supplier Part Number: FS2700-12-12

Specifications

Brand
BRENNAN
a1 Drill Dimensions
0.609 in
a2 Drill Dimensions
0.609 in
Connection Size 1
3/4 in
Connection Size 2
3/4 in
Connection Type
Male ORFS
Connection Type 1
Male SAE ORFS
Connection Type 2
Male SAE ORFS
Dimension Standards
SAE J1453
Dimensions
2.72 in L
Finish
Trivalent Zinc-Plated
Fitting Type
Union
Hex Size
1-1/2 in
Material
Steel
Material Construction
AISI 12L14/1045 Steel
Maximum Operating Pressure
6000 psi
Operating Temperature
-40 to 250 deg F
Series
FS2700 Series
Thread Size
1-3/16-12
Tube Outside Diameter
3/4 in

Product Questions & Answers (3)

Question by: Larry M on Sep 23, 2025, 8:47 AM
What size tubing does this bulkhead union connect to?
Answer by: Customer Support on Sep 24, 2025, 10:52 AM
This bulkhead union is made for 3/4 inch outer diameter tubing.
Question by: Melvin H on Oct 19, 2025, 2:23 PM
got a panel with a 3/4 tube line, is this the bulkhead fitting that passes through and ties both sides together?
Answer by: Customer Support on Oct 20, 2025, 7:03 PM
Made for bulkhead mounting, this union gives you a straight pass-through connection with matching ends on both sides. It’s sized for 3/4 inch tube OD, with 1-3/16-12 threads on both the A1 and A2 sides.
Question by: Peggy M on Dec 20, 2025, 6:51 AM
thread size on both ends is 1-3/16-12, that right? just want to make sure before i order a couple of these for a panel mount setup
Answer by: Customer Support on Dec 21, 2025, 8:14 PM
Both sides run the same 1-3/16-12 thread, so you're good there. The A1 and A2 sections are identical on this union, which makes it a straight-through bulkhead with no size change from one end to the other. Drill size for both sides is 0.609 inches, and the hex comes in at 1.500 inches across if you're planning for wrench clearance during install.

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