Skip to the beginning of the images gallery

Brass Adapter, 3/8-18 Male NPT Countersunk Hex Plug

Description & Features

This high-quality brass plug from Midland Industries is precisely designed for reliable use in various industrial applications. Featuring a 3/8-18 Male NPT thread, this countersunk hex plug ensures a secure and leak-free connection.

Constructed from durable brass material, it provides excellent resistance to corrosion, enhancing longevity. The hexagonal shape of the plug allows for easy and secure installation or removal using a wrench.

It's perfectly suited for systems requiring a tight and durable seal without the need for additional thread sealants. The brass composition also ensures a strong and dependable performance in demanding environments.

MPN: 28095

Specifications

Alternate Part Numbers Alternate Part Number C1BE38, Alternate Part Number FMC103-1714, Alternate Part Number MI-08754478, Alternate Part Number MINO-01769X80128	Brand Midland Industries	Brand Midland Industries	Pack Size 1.00	UOM EA	L 0.45	Supplier Part Number 28095	Thread 1 3/8-18	Thread Sealant No	Product Weight 0.03 lbs

Similar Products

Model Number	Thread 1	L
23155X12 Brass NPT Socket Hex Plug	3/4-14	0.62
23155X4 Brass NPT Socket Hex Plug	1/4-18	0.45
23155X8 Brass NPT Socket Hex Plug	1/2-14	0.6

Product Questions & Answers (3)

Question by: Danny O on Jul 16, 2025, 8:00 PM

got a brass plug here, is this the one with 3/8-18 male NPT threads and a countersunk hex?

Answer by: Customer Support on Jul 17, 2025, 8:14 PM

Match it up by the thread callout and style. This part is a brass countersunk hex plug with 3/8-18 male NPT threads.

Question by: Freddie P on Dec 26, 2025, 9:24 PM

got a port that’s 3/8-18 male NPT, is this the right plug to cap it off?

Answer by: Customer Support on Dec 28, 2025, 8:02 PM

For a 3/8-18 male NPT port, this is the matching plug style. It is a 3/8-18 Male NPT countersunk hex plug meant to thread in and seal that size NPT connection.

Question by: Shawn E on Nov 19, 2025, 6:20 PM

Will this plug hold up if I need to remove it and reinstall it a few times?

Answer by: Customer Support on Nov 21, 2025, 6:11 AM

Constructed from durable brass, this plug offers excellent resistance to corrosion, so it should be good for multiple uses as long as you don't overtighten it.