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#4 MP X #6 FP SWIVEL

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Description & Features

The #4 MP X #6 FP SWIVEL from Brennan Industries Inc. is designed for high-pressure environments boasting a maximum dynamic pressure of 6 000 psi. Precision-crafted from straight steel this fitting ensures durability and reliable performance.

This high-quality hydraulic fitting features a male NPTF thread size of 1/4-18 and a female NPSM swivel thread size of 3/8-18. Both threads conform to SAE specifications J476 and J514 respectively ensuring compatibility with industry standards.

With an overall length of 1.520 mm a secondary length of 1.310 mm and a hex size of 0.875 mm this swivel fitting is compact yet robust. Its thread drills are each 0.281 mm in diameter providing a secure and efficient connection. Ideal for various industrial applications its precision engineering minimizes the risk of leaks and failures.

Supplier Part Number: 1404-04-06

Specifications

Brand
BRENNAN
Connection Size 1
1/4 in
Connection Size 2
3/8 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
1.002 cu-in
Dimension Standards
SAE J476, SAE J514
Dimensions
1.52 in L
Finish
Trivalent Zinc-Plated
Fitting Type
Adapter
Hex Size
0.813 x 0.875 in
l2 Dimensions
1.31 in
Material
Steel
Material Construction
12L14/C1045 Steel
Maximum Operating Pressure
6000 psi
Series
1404 Series
Thread 2 Drill Dimensions
0.281 in
Thread B1 Drill Dimensions
0.281 in
Thread Size
3/8-18 x 1/4-18

Product Questions & Answers (3)

Question by: Roy H on Aug 29, 2025, 6:30 AM
pressure rating on this swivel -- is 6,000 psi the max or is there some derating I need to worry about under normal running conditions?
Answer by: Customer Support on Aug 30, 2025, 10:17 AM
6,000 psi is the rated maximum dynamic pressure for this fitting, so that figure applies during active system operation, not just static conditions. As long as your system stays at or below that threshold under load, you're within spec. No derating factor is published for this part.
Question by: Keith G on Nov 2, 2025, 7:25 AM
If the dynamic pressure maxes out at 6000 psi, would it be alright to use on equipment that usually runs around 5500?
Answer by: Customer Support on Nov 4, 2025, 6:55 AM
Designed for high-pressure environments, this swivel fitting should handle systems running at 5500 psi without any trouble, as long as you stay under the 6000 psi limit.
Question by: Terry H on Feb 24, 2026, 1:59 PM
got a 1/4-18 male NPTF port on one side and need a 3/8-18 female swivel on the other. is that what this fitting is?
Answer by: Customer Support on Feb 25, 2026, 9:06 PM
It is a straight steel swivel adapter with a 1/4-18 male NPTF thread on one end and a 3/8-18 female NPSM swivel thread on the other, built to SAE J476 (NPTF) and SAE J514 (swivel) thread specs.

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