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20MP-06FP REDUCER BUSHING

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Description & Features

The 20MP-06FP Reducer Bushing is engineered to facilitate secure connections in various industrial applications. Designed by Brennan Industries Inc this bushing efficiently adapts between threads conforming to SAE J476 specifications.

Manufactured from straight steel it ensures durability and long-lasting performance. This reducer bushing supports a maximum dynamic pressure of 3 000 Psi ideal for robust industrial tasks.

The male NPTF thread size of B1 is 1-1/4-11-1/2 with a drill size of 1.142 mm while the female NPTF thread size of B2 is 3/8-18 with a drill size of 0.406 mm.

With an overall length of 1.470 mm this product is designed for efficient installation in demanding environments providing reliable connections.

MPN: 5406-20-06

Supplier Part Number: 5406-20-06

California Residents: PROP-65 WARNING

Specifications

Brand
BRENNAN
Connection Size 1
1-1/4 in
Connection Size 2
3/8 in
Connection Type
FNPT, MNPT
Connection Type 1
Male SAE NPTF
Connection Type 2
Female SAE NPTF
Cubic Inch Space L x W x H Dimensions
4.502 cu-in
Dimension Standards
SAE J476, SAE J514
Dimensions
1.47 in L
Finish
Trivalent Zinc-Plated
Fitting Type
Bushing
Hex Size
1-3/4 in
Material
Steel
Material Construction
AISI 12L14/C1045 Steel
Maximum Operating Pressure
3000 psi
Series
5406 Series
Thread 2 Drill Dimensions
0.406 in
Thread B1 Drill Dimensions
1.142 in
Thread Size
1-1/4-11-1/2 x 3/8-18

Product Questions & Answers (3)

Question by: Ray M on Oct 31, 2025, 6:33 PM
i’ve got a 1-1/4 male pipe thread port but need to step it down to 3/8, is that what this bushing does?
Answer by: Customer Support on Nov 2, 2025, 7:40 AM
Function-wise, it adapts from a 1-1/4-11-1/2 male NPTF thread on the outside (B1) down to a 3/8-18 female NPTF thread on the inside (B2), with both threads conforming to SAE J476.
Question by: Phil P on Jan 23, 2026, 2:59 PM
Got a 3/8 female port on a valve body and need to hook up a 1-1/4 male line to it, this bushing the right move for that?
Answer by: Customer Support on Jan 25, 2026, 6:11 AM
That's what this one's built for. The male end is 1-1/4-11-1/2 NPTF and the female end accepts 3/8-18 NPTF, so it steps down from the larger male thread into the smaller female port. Both threads conform to SAE J476, so you'll get a proper dry-seal fit on each end when torqued correctly.
Question by: Janice S on May 22, 2025, 6:09 AM
What kind of pressure can this bushing handle?
Answer by: Customer Support on May 23, 2025, 9:59 PM
This reducer bushing is rated for a maximum dynamic pressure of 3,000 PSI, making it suitable for pretty robust industrial jobs.

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