Skip to the beginning of the images gallery

#6 MP X #4 FP SWIVEL

Description & Features

The #6 MP X #4 FP Swivel from Brennan Industries Inc is engineered with precision and quality ensuring reliable performance in demanding industrial environments.

With a maximum dynamic pressure rating of 6 000 psi this straight steel connector is ideal for high-pressure applications. The overall dimensions include a length of 1.490 mm and a secondary length of 1.300 mm ensuring a compact yet robust design.

Specifically it features a Male NPTF 3/8-18 thread conforming to SAE J476 standards and a Female NPSM Swivel 1/4-18 thread meeting SAE J514 specifications. The hex size is determined at 0.688 mm and it offers efficient connectivity and flexibility.

As part of the Series 1404 range this swivel is designed for seamless integration ensuring optimal performance in various industrial settings. Additionally it includes a California Proposition 65 warning for residents.

Supplier Part Number: 1404-06-04

Specifications

Brand BRENNAN	Connection Size 1 3/8 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 0.838 cu-in	Dimension Standards SAE J476, SAE J514	Dimensions 1.49 in L	Finish Trivalent Zinc-Plated	Fitting Type Adapter	Hex Size 3/4 in	l2 Dimensions 1.3 in	Material Steel	Material Construction 12L14/C1045 Steel	Maximum Operating Pressure 6000 psi	Series 1404 Series	Thread 2 Drill Dimensions 21 mm	Thread B1 Drill Dimensions 0.406 in	Thread Size 3/8-18 x 1/4-18

Similar Products

Model Number	Connection Size 1	Connection Size 2	Thread Size	Hex Size
1404-08-12 Steel Female To Male NPT Adapter	1/2 in	3/4 in	3/4-14 x 1/2-14	1-1/4
1404-20-16 Steel Female To Male NPT Adapter	1-1/4 in	1 in	1-1/4-11-1/2 x 1-11-1/2
1404-12-06 Steel Female To Male NPT Adapter	3/4 in	3/8 in	3/4-14 x 3/8-18	0.88 x 1.12 in
1404-02-02	1/8 in	1/8 in	1/8-27	0.563 in
1404-02-04	1/8 in	1/4 in	1/4-18 x 1/8-27	11/16 in
1404-04-02	1/4 in	1/8 in	1/4-18 x 1/8-27	0.563 x 0.688 in
1404-04-04	1/4 in	1/4 in	1/4-18	11/16 in
1404-04-04-R.031	1/4 in	1/4 in	1/4-18	11/16 in
1404-04-06	1/4 in	3/8 in	3/8-18 x 1/4-18	0.813 x 0.875 in
1404-04-08	1/4 in	1/2 in	1/2-14 x 1/4-18	1 x 1 in
1404-06-06	3/8 in	3/8 in	3/8-18	7/8 in
1404-06-08	3/8 in	1/2 in	1/2-14 x 3/8-18	1 x 1 in
1404-08-04	1/2 in	1/4 in	1/2-14 x 1/4-18	11/16 x 7/8 in
1404-08-06	1/2 in	3/8 in	1/2-14 x 3/8-18	7/8 in
1404-08-08	1/2 in	1/2 in	1/2-14	1 x 1 in
1404-12-08	3/4 in	1/2 in	3/4-14 x 1/2-14	1-1/4
1404-12-12	3/4 in	3/4 in	3/4-14	1-1/4
1404-12-16	3/4 in	1 in	1-11-1/2 x 3/4-14	1-1/2 in
1404-16-08	1 in	1/2 in	1-11-1/2 x 1/2-14	1 x 1-3/8 in
1404-16-12	1 in	3/4 in	1-11-1/2 x 3/4-14	1-1/2 x 1-1/4 in
1404-16-16	1 in	1 in	1-11-1/2	1-1/2 in
1404-16-20	1 in	1-1/4 in	1-1/4-11-1/2 x 1-11-1/2	1-7/8 in
1404-16-24	1 in	1-1/2 in	1-1/2-11-1/2 x 1-11-1/2	2-1/8 in
1404-20-20	1-1/4 in	1-1/4 in	1-1/4-11-1/2	1-7/8 in
1404-20-24	1-1/4 in	1-1/2 in	1-1/4-11-1/2, 1-1/2-11-1/2	2-1/8 in
1404-24-20	1-1/2 in	1-1/4 in	1-1/4-11-1/2, 1-1/2-11-1/2	1-7/8 in
1404-24-24	1-1/2 in	1-1/2 in	1-1/2-11-1/2	2-1/8 in
1404-32-32	2 in	2 in	2-11-1/2	2-5/8 in

Product Questions & Answers (3)

Question by: Shane B on Dec 2, 2025, 6:15 AM

What’s the highest pressure this swivel can handle without issues?

Answer by: Customer Support on Dec 3, 2025, 7:46 AM

This straight steel connector is rated for a maximum dynamic pressure of 6,000 psi, making it suitable for high-pressure applications.

Question by: Neil R on Aug 4, 2025, 5:52 PM

i got a hose end that’s 1/4-18 swivel female. will it mate up to this fitting?

Answer by: Customer Support on Aug 5, 2025, 7:10 PM

On the swivel side, it has a 1/4-18 Female NPSM swivel thread built to SAE J514. The other end is a 3/8-18 Male NPTF thread per SAE J476, so it is a straight adapter between those two thread types.

Question by: Cody H on Feb 6, 2026, 6:11 PM

Does the 3/8 male end on this swivel use a dry-seal thread, or is it just a standard NPT?

Answer by: Customer Support on Feb 8, 2026, 6:22 AM

The male end is NPTF, which is a dry-seal thread conforming to SAE J476. That means it's built to seal on the threads themselves without relying on tape or compound, though many folks still use thread sealant out of habit. The female swivel side is 1/4-18 NPSM, which is a straight mechanical thread designed to seal through a flare or mating surface rather than the threads themselves, per SAE J514.

#6 MP X #4 FP SWIVEL

Description & Features

Specifications

Related Documents

Similar Products

Product Questions & Answers (3)