brennan compression -20-20-O

Description & Features

This Brennan compression fitting, part number C6400-20-20-O, features a -20BT to -20MORB straight configuration.

The brennan compression -20-20-O fitting incorporates a B1 drill size of 1.093" with a 1 5/8-12 B1 thread. The B2 drill size is also 1.093". It has a C Hex size of 1.875" and a K Depth of 0.415", with an L Length of 1.90". This fitting is part of the C6400-O series and is designed for a tube OD of 1 1/4".

SKU: C6400-20-20-O

Supplier Part Number (MPN): C6400-20-20-O

Specifications

b1 Drill Dimensions
1.093 in
b2 Drill Dimensions
1.093 in
Connection Size 1
1-1/4 in
Connection Size 2
1-1/4 in
Connection Type
Bite, Male SAE ORB
Connection Type 1
Flareless Bite
Connection Type 2
Male SAE ORB
Dimension Standards
SAE J1926, SAE J514
Dimensions
0.415 in L
Finish
Trivalent Zinc-Plated
Fitting Type
Adapter
Hex Size
1-7/8 in
Material
Steel
Material Construction
12L14/C1045 Steel
Maximum Operating Pressure
3000 psi
Operating Temperature
-40 to 250 deg F
Series
C6400-O Series
Thread Size
1-5/8-12
Tube Outside Diameter
1-1/4 in

Product Questions & Answers (2)

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Question by: Janet A on Sep 8, 2025, 9:46 AM
What size drill bit do I need for this fitting?
Answer by: Customer Support on Sep 9, 2025, 10:04 AM
The B1 and B2 drill sizes for this fitting are both 1.093 inches.
Question by: Duane K on Jul 6, 2025, 6:15 PM
Got a 1 5/8-12 male ORB port on a manifold block, this compression fitting gonna thread right into it?
Answer by: Customer Support on Jul 8, 2025, 8:43 AM
Yeah, the male end on this one is 1 5/8-12, so it'll thread directly into a female ORB port of the same size without any adapter in between. The hex is 1.875 inches across, so make sure you've got a wrench that'll fit that before you start the job.

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