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Steel Adapter, 3/4-14 Male NPT To 3/8-18 Female NPT, Straight

Description & Features

Engineered for precise connections, this steel adapter offers a reliable transition from 3/4-14 Male NPT to 3/8-18 Female NPT threads. Its robust construction ensures longevity and durability, making it suitable for demanding industrial applications. The straight design facilitates straightforward installations, maintaining efficient fluid flow and reducing potential for leaks.

Manufactured by OM Industrial Products Corp and associated with Brennan Industries, this adapter is part of the Pipe To Pipe Steel Adapters series, ensuring compatibility with a wide range of systems. With its precise threading and resilient steel build, it serves as an essential component for maintaining integrity in industrial environments.

SKU: 5405-12-06

Supplier Part Number (MPN): 5405-12-06

Alternate Part Numbers: C1DX68

Specifications

A 1.63	Alternate Part Numbers Alternate Part Number C1DX68	Brand Brennan Industries Inc	Brand Brennan Industries	Pack Size 1.00	UOM EA	Supplier Part Number 5405-12-06	Thread 1 3/4-14	Thread 2 3/8-18	Thread Sealant No	Product Weight 0.30 lbs

Similar Products

Model Number	Thread 1	Thread 2	A
2040-2-4S Steel Male To Female NPT Adapter	1/8-27	1/4-18	1.21
2040-4-8S Steel Male To Female NPT Adapter	1/4-18	1/2-14	1.68
2040-12-12S Steel Male To Female NPT Adapter	3/4-14	3/4-14	1.93
2040-12-16S Steel Male To Female NPT Adapter	3/4-14	1-11-1/2	2.18
2040-16-16S Steel Male To Female NPT Adapter	1-11-1/2	1-11-1/2	2.37
2040-16-20S Steel Male To Female NPT Adapter	1-11-1/2	1-1/4-11-1/2	2.46
2040-2-2S Steel Male To Female NPT Adapter	1/8-27	1/8-27	1.04
2040-4-4S Steel Male To Female NPT Adapter	1/4-18	1/4-18	1.39
2040-4-6S Steel Male To Female NPT Adapter	1/4-18	3/8-18	1.44
2040-6-6S Steel Male To Female NPT Adapter	3/8-18	3/8-18	1.44
2040-6-8S Steel Male To Female NPT Adapter	3/8-18	1/2-14	1.68
2040-8-12S Steel Male To Female NPT Adapter	1/2-14	3/4-14	1.93
2040-8-8S Steel Male To Female NPT Adapter	1/2-14	1/2-14	1.87
5405-06-04 Steel Male To Female NPT Adapter	3/8-18	1/4-18	1.44
5405-08-06 Steel Male To Female NPT Adapter	1/2-14	3/8-18	1.85
5405-08-16 Steel Male To Female NPT Adapter	1/2-14	1-11-1/2	2.18
5405-12-06 Steel Male To Female NPT Adapter	3/4-14	3/8-18	1.63
5405-12-08 Steel Male To Female NPT Adapter	3/4-14	1/2-14	1.94
5405-16-12 Steel Male To Female NPT Adapter	1-11-1/2	3/4-14	2.12

Product Questions & Answers (3)

Question by: Lee W on Nov 4, 2025, 7:35 AM

Will this fitting work to connect a 3/4" male pipe to a 3/8" female pipe? Just want to make sure before I order.

Answer by: Customer Support on Nov 6, 2025, 6:22 AM

Yes, this adapter is specifically designed to connect a 3/4-14 male NPT to a 3/8-18 female NPT.

Question by: Kurt F on Sep 23, 2025, 11:43 AM

got a 3/4 male NPT port on a manifold and need to step it down to 3/8 female, this the right part for that?

Answer by: Customer Support on Sep 24, 2025, 4:24 PM

That's what this adapter is built for. The male end is 3/4-14 NPT and the female end is 3/8-18 NPT, so you're going from the larger male thread into a smaller female port in one straight fitting. No extra unions or couplings needed. Steel construction, straight configuration, made by Brennan Industries under the OM Industrial Products Corp brand.

Question by: Ricky J on Apr 9, 2025, 9:15 AM

got a fitting with 3/4-14 male npt on it now, will this adapter let me step down to a 3/8-18 female npt port?

Answer by: Customer Support on Apr 10, 2025, 5:07 PM

It’s a straight steel pipe-to-pipe adapter with 3/4-14 male NPT on one side and 3/8-18 female NPT on the other, so it’s meant for exactly that thread step-down connection.