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Steel Adapter, 3/8-18 Male NPT To 1/4-18 Female NPT, Straight

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Description & Features

The steel adapter 5405-06-04, designed by Brennan Industries Inc, ensures reliable and durable connections for numerous industrial applications. Engineered with precision, this adapter features a 3/8-18 male NPT threaded connection on one end and a 1/4-18 female NPT threaded connection on the other.

No thread sealant is required, making it a straightforward and efficient choice for connecting NPT components. The straight design facilitates easy installation and consistent performance under various conditions.

Renowned for its robust construction, the adapter is crafted from high-quality steel, providing excellent resistance to wear and corrosion. This feature makes it suitable for demanding environments where dependable performance is crucial.

MPN: C1DX65

Supplier Part Number: 5405-06-04

Specifications

A
1.44
Alternate Part Numbers
Alternate Part Number 2040-6-4S, Alternate Part Number C1DX65, Alternate Part Number MI-01363215, Alternate Part Number MINO-00028F69448
Brand
Brennan Industries Inc
Brand
Brennan Industries
Pack Size
1.00
UOM
EA
Supplier Part Number
5405-06-04
Thread 1
3/8-18
Thread 2
1/4-18
Thread Sealant
No
Product Weight
0.12 lbs

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Product Questions & Answers (1)

Question by: Kent G on Nov 19, 2025, 8:10 PM
Got a line running 3/8 NPT male and need to tie into a 1/4 female port. this adapter gonna work for that?
Answer by: Customer Support on Nov 21, 2025, 6:04 AM
That's what this piece is built for. One end is 3/8-18 male NPT and the other is 1/4-18 female NPT, so you're threading the male end into your 3/8 line and accepting a 1/4 male fitting on the other side. Steel construction holds up well in tough conditions, and you won't need any thread sealant to make the connection.