Home > Hydraulic Adapters > Steel Hydraulic Adapters > Steel Pipe Fittings (NPTF)
Our steel pipe fittings come in many configurations such as 5404 male pipe hex nipple, 5000 female pipe coupling, 5404N seamless pipe nipple, and many more. These pipe fittings have NPTF threads, which stands for American Standard Taper Pipe Duel Dryseal Thread, that are designed to screw together and cause interference at the roots and crests of the threads. The thread deformations caused by the interference fit and the wrench tightening is designed to make a dry mechanical seal.


Industrial Supply offers a multitude of items ranging from camlocks, hydraulic hose, industrial hose, pipe fittings, hydraulic quick couplers, gauges, and many more industrial type products. If you see something on the site that you would like to know more about, or if there is something that you were looking for in particular that’s not on the site, please contact us at (360) 734-6330 and we’ll be there to help you as we pride ourselves with “Service Being Our Most Important Product”.

5000 Pipe Coupling 5404 Hex Nipple
Our 5000 pipe couplings come in a zinc plated steel and have NPTF threads. The sizes range from 1/8" to 2". These are high pressure hydraulic fittings.
Our 5404 hex nipples come in a zinc plated steel and have NPTF threads. These sizes range from 1/8" to 2". These are high pressure hydraulic fittings.
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5404-04-04 Hex Nipple - 1/4" Male NPTF x 1/4" Male NPTF - Zinc Plated Steel 5404-04-04 Hex Nipple - 1/4" Male NPTF x 1/4" Male NPTF - Zinc Plated Steel

Our 5404-04-04 hex nipple has 1/4" Male NPTF x 1/4" Male NPTF, and is zinc plated steel. It is constructed of high strength steel and is interchangeable with Aeroquip 2083, Parker FF/0101, and Weatherhead C3069 fittings.

Our Price: $0.60
5404-04-06 Hex Nipple - 1/4" Male NPTF x 3/8" Male NPTF - Zinc Plated Steel 5404-04-06 Hex Nipple - 1/4" Male NPTF x 3/8" Male NPTF - Zinc Plated Steel

Our 5404-04-06 hex nipple has 1/4" Male NPTF x 3/8" Male NPTF, and is zinc plated steel. It is constructed of high strength steel and is interchangeable with Aeroquip 2083, Parker FF/0101, and Weatherhead C3069 fittings.

Our Price: $0.89
5404-08-08 Hex Nipple - 1/2" Male NPTF x 1/2" Male NPTF - Zinc Plated Steel 5404-08-08 Hex Nipple - 1/2" Male NPTF x 1/2" Male NPTF - Zinc Plated Steel

Our 5404-08-08 hex nipple has 1/2" male NPTF x 1/2" male NPTF, and is zinc plated steel. It is constructed of high strength steel and is interchangeable with Aeroquip 2083, Parker FF/0101, and Weatherhead C3069 fittings.

Our Price: $0.93
5000-06-06 Pipe Coupling - 3/8" Female NPTF x 3/8" Female NPTF - Zinc Plated Steel 5000-06-06 Pipe Coupling - 3/8" Female NPTF x 3/8" Female NPTF - Zinc Plated Steel

Our 5000-06-06 pipe coupling is 3/8" Female NPTF x 3/8" Female NPTF, and is also zinc plated steel. It is constructed of high strength steel and is interchangeable with Aeroquip 2096, Parker GG/0202, and Weatherhead C3309 fittings.

Our Price: $0.97
5404-06-06 Hex Nipple - 3/8" Male NPTF x 3/8" Male NPTF - Zinc Plated Steel 5404-06-06 Hex Nipple - 3/8" Male NPTF x 3/8" Male NPTF - Zinc Plated Steel

Our 5404-06-06 hex nipple has 3/8" Male NPTF x 3/8" Male NPTF, and is zinc plated steel. It is constructed of high strength steel and is interchangeable with Aeroquip 2083, Parker FF/0101, and Weatherhead C3069 fittings.

Our Price: $0.98
5000-04-04 Pipe Coupling - 1/4" Female NPTF x 1/4" Female NPTF - Zinc Plated Steel 5000-04-04 Pipe Coupling - 1/4" Female NPTF x 1/4" Female NPTF - Zinc Plated Steel

Our 5000-04-04 pipe coupling is 1/4" Female NPTF x 1/4" Female NPTF, and is also zinc plated steel. It is constructed of high strength steel and is interchangeable with Aeroquip 2096, Parker GG/0202, and Weatherhead C3309 fittings.

Our Price: $1.08