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

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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