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20MJ-12MORB STRAIGHT

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Description & Features

Manufactured by Brennan Industries, this straight adapter fitting connects a 20 series metric JIC male thread to a 12 series male O-ring boss (ORB) port, making it a practical solution for joining metric and inch-standard hydraulic lines in a single inline connection. The straight configuration keeps the assembly compact where space and routing constraints call for a direct, non-angled transition.

The 20MJ-12MORB Straight is suited for use in hydraulic circuits where metric JIC and ORB port interfaces must be bridged without additional adapters. Brennan Industries fittings are widely used across mobile equipment, industrial machinery, and fluid power systems that require reliable threaded connections.

SKU: 6400-20-12

Supplier Part Number (MPN): 6400-20-12-O

Alternate Part Numbers: A202702-12-20S

Specifications

Brand
BRENNAN
Connection Size 1
1-1/4 in
Connection Size 2
3/4 in
Connection Type
Male JIC, Male SAE ORB
Connection Type 1
Male SAE 37 deg JIC Flare
Connection Type 2
Male SAE ORB
Dimension Standards
SAE J1926, SAE J514
Dimensions
2.3 in L
Finish
Trivalent Zinc-Plated
Fitting Type
Adapter
Hex Size
1.688 in
Material
Steel
Material Construction
12L14/C1045 Steel
Maximum Operating Pressure
4000 psi
Operating Temperature
-40 to 250 deg F
Series
6400-O Series
Thread Size
1-5/8-12 x 1-1/16-12

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7/8 in

1-3/16-12, 7/8-14

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7/8-14 x 1-5/16-12

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1-5/8-12 x 7/8-14

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16MJ-20MORB STRAIGHT

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1-1/4 in

1-5/8-12 x 1-5/16-12

2.12 in L

16MJ-24MORB STRAIGHT

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1 in

1-1/2 in

1-7/8-12 x 1-5/16-12

2.2 in L

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1-1/4 in

1 in

1-5/8-12 x 1-5/16-12

2.33 in L

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1-1/4 in

1-1/4 in

1-5/8-12

2.17 in L

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1-1/4 in

1-1/2 in

1-7/8-12, 1-5/8-12

2.24 in L

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1-1/4 in

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2-1/2-12 x 1-5/8-12

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1-1/4 in

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2.53 in L

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1-1/2 in

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Product Questions & Answers (2)

Question by: Dwayne W on Nov 21, 2025, 6:21 PM
Got a metric JIC line coming off a pump and need to tie into an ORB port on a valve block, this the right fitting for that?
Answer by: Customer Support on Nov 23, 2025, 1:23 PM
That's what this one's built for. One end is a 20 series metric JIC male thread, the other is a 12 series male O-ring boss. So if you've got a metric JIC line that needs to seat into an ORB port, this straight adapter bridges that connection in a single piece without stacking extra fittings in between.
Question by: Howard W on Feb 19, 2026, 11:36 AM
got a hose with a 20 series metric JIC male on it and the other side needs to go into a 12 series ORB port. is this the right straight adapter?
Answer by: Customer Support on Feb 21, 2026, 6:12 AM
It bridges a 20 series metric JIC male thread to a 12 series male O-ring boss (ORB) port in one inline, straight connection, so it’s meant for exactly that metric-to-inch interface change.

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