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#12 MP X #20 FP

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Description & Features

Experience seamless connectivity with the Brennan 12MP-20FP Straight Expander, designed for robust performance in industrial settings. Constructed from durable straight steel, this expander ensures reliable use under a maximum dynamic pressure of 2,500 psi. Its precise engineering features a Male NPTF Thread B1 with a size of 3/4-14 and a Female NPTF Thread B2 with a size of 1-1/4-11-1/2, both adhering to SAE J476 standards. The overall length of 2.270 mm allows for versatile integration into diverse hydraulic systems, enhancing compatibility and system efficiency.

This expander is an essential component for applications requiring secure and efficient expansion of hydraulic connections. The Brennan 5405 series delivers quality and reliability, making it a trusted choice for industrial professionals. With its accurate threading and solid construction, the 12MP-20FP Straight Expander supports demanding tasks in various industrial environments.

SKU: 5405-12-20

Supplier Part Number (MPN): 5405-12-20

Alternate Part Numbers: A2040-12-20S

Specifications

Brand
BRENNAN
Connection Size 1
3/4 in
Connection Size 2
1-1/4 in
Connection Type
FNPT, MNPT
Connection Type 1
Male SAE 30 deg NPTF
Connection Type 2
Female SAE NPTF
Dimension Standards
SAE J476
Dimensions
2.27 in L
Finish
Trivalent Zinc-Plated
Fitting Type
Expander
Hex Size
2 in
Material
Steel
Material Construction
12L14/C1045 Steel
Maximum Operating Pressure
2500 psi
Series
5405 Series
Thread 2 Drill Dimensions
1.25 in
Thread B1 Drill Dimensions
0.719 in
Thread Size
1-1/4-11-1/2 x 3/4-14

Product Questions & Answers (2)

Question by: Dustin G on Mar 19, 2026, 10:05 AM
what's the pressure rating on this expander, and is 2,500 psi enough for most shop hydraulic lines?
Answer by: Customer Support on Mar 20, 2026, 7:18 PM
At 2,500 psi maximum dynamic pressure, this fitting handles the working pressures found in a wide range of industrial hydraulic systems. Most standard shop and mobile hydraulic circuits run well within that range, so for typical service work it should hold up fine. Just make sure your system's peak pressure stays at or below that rating and you're in good shape.
Question by: Lee H on Oct 8, 2025, 4:27 PM
What’s the max pressure this fitting can handle? Just want to make sure it’ll work for my system.
Answer by: Customer Support on Oct 10, 2025, 1:30 PM
This straight expander is rated for a maximum dynamic pressure of 2,500 psi, making it suitable for many industrial hydraulic applications where secure expansion is needed.

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