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ADAPTER

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Description & Features

Manufactured by Brennan Industries Inc this adapter meets stringent SAE J476 and SAE J514 specifications. Crafted from high-quality straight steel it is designed for high-pressure applications with a maximum dynamic pressure rating of 6 000 psi.

With an overall length of 1.710 mm and a cubage of 1.309 cubic inches it fits effortlessly into various setups. The adapter features a male NPTF thread on one end (1/2-14) and a female NPSM swivel thread on the other (1/4-18) offering secure and reliable connectivity. The hexagonal width is 0.688 mm ensuring ease of installation and removal.

Thread B1 and Thread B2 types have precise drill dimensions of 0.531 mm and 0.21 mm respectively ensuring optimal performance. It is part of the 1404 series and caters to specific industrial applications requiring robust and leak-proof connections.

For California residents please be aware of the PROP-65 warning.

MPN: 1404-08-04

Supplier Part Number: 1404-08-04

Specifications

Brand
BRENNAN
Connection Size 1
1/2 in
Connection Size 2
1/4 in
Connection Type
FNPSM Swivel, MNPT
Connection Type 1
Male SAE 30 deg NPTF
Connection Type 2
SAE FNPSM Swivel
Cubic Inch Space L x W x H Dimensions
1.309 cu-in
Dimension Standards
SAE J476, SAE J514
Dimensions
1.71 in L
Finish
Trivalent Zinc-Plated
Fitting Type
Adapter
Hex Size
11/16 x 7/8 in
l2 Dimensions
1.52 in
Material
Steel
Material Construction
12L14/C1045 Steel
Maximum Operating Pressure
6000 psi
Series
1404 Series
Thread 2 Drill Dimensions
0.21 in
Thread B1 Drill Dimensions
0.531 in
Thread Size
1/2-14 x 1/4-18

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Product Questions & Answers (3)

Question by: Lee J on Sep 29, 2025, 8:21 AM
i got a line with 1/2-14 nptf on it now. will this adapter let me hook that up to a 1/4-18 swivel end?
Answer by: Customer Support on Oct 1, 2025, 6:35 AM
Function-wise, it bridges a 1/2-14 male NPTF connection on one side to a 1/4-18 female NPSM swivel on the other, so it is meant for that exact thread pairing.
Question by: Harold W on Feb 9, 2026, 10:05 AM
what's the max pressure this adapter can handle runnin hydraulic lines?
Answer by: Customer Support on Feb 10, 2026, 12:59 PM
Rated at 6,000 psi dynamic pressure, this fitting holds up well in demanding high-pressure hydraulic setups. It's straight steel construction and meets both SAE J476 and SAE J514 specs, so it's built for serious work, not light-duty hydraulic connections.
Question by: Rhonda M on Nov 14, 2025, 9:43 PM
Reckon this adapter is good for high-pressure stuff, like they say?
Answer by: Customer Support on Nov 16, 2025, 11:27 AM
Rated for a maximum dynamic pressure of 6,000 psi, this adapter is certainly built for demanding high-pressure applications.

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