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Brass Adapter, 1/4-18 Male NPT Countersunk Hex Plug

Alternate Part Numbers Alternate Part Number C1BE37, Alternate Part Number MI-08754477, Alternate Part Number MINO-01769X80127	Brand ACR Industries	Brand ACR Industries	Pack Size 1.00	UOM EA	L 0.45	Supplier Part Number 23155X4	Thread 1 1/4-18	Thread Sealant No	Product Weight 0.02 lbs

Product Questions & Answers 3

Product Questions & Answers

does this plug need any kind of thread tape or sealant to seat right, or is the brass fit tight enough on its own?

Question by: Duane P on Oct 20, 2025, 6:02 AM

Brass NPT threads on a countersunk hex plug like this one are machined to create a mechanical seal as they're tightened into the port. The 1/4-18 NPT taper does most of the work, and the product is noted as providing a leak-free connection without requiring additional thread sealant. That said, some folks in higher-pressure systems still run a wrap of PTFE tape out of habit, and there's no harm in it.

Answer by: Customer Support on Oct 22, 2025, 7:49 AM

got a port with 1/4-18 npt threads. is this the right plug for it

Question by: Earl C on Nov 25, 2025, 6:05 AM

For a 1/4-18 male NPT thread match, this plug is built for that exact thread size and is meant to seal off a matching NPT port with a tight, secure fit.

Answer by: Customer Support on Nov 27, 2025, 6:19 AM

Will this plug work alright for somethin' that's gonna be outside most of the time?

Question by: Dean M on Sep 24, 2025, 4:04 PM

Brass offers good corrosion resistance, so this plug should hold up well in outdoor environments.

Answer by: Customer Support on Sep 26, 2025, 6:12 AM

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