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Brass Adapter, 1/8-27 Male NPT Square Head Plug

Alternate Part Numbers Alternate Part Number C1HN79, Alternate Part Number MI-00333534, Alternate Part Number MINO-00925F73226	Application Grease, refrigeration, instrumentation and hydraulic systems. Fuel, LP and natural gas available on special order.	Brand Danfoss Power Solutions (II LLC Aeroquip)	Brand Aeroquip	Pack Size 1.00	UOM EA	End Gender 1 13554	End Size 1 0.13	End Type 1 PTF SAE Short	L 0.58	Minimum Working Temperature -65	Supplier Part Number 3151X2	Thread 1 1/8-27	Thread Sealant No	Product Weight 0.01 lbs

Product Questions & Answers 3

Product Questions & Answers

got a port that’s 1/8-27 npt. is this the right square head plug for it?

Question by: Dale B on Oct 19, 2025, 7:51 PM

For a 1/8-27 male NPT plug, the key match is the 1/8-27 thread, and that is what this part is. It is a square head plug with a male 1/8-27 end.

Answer by: Customer Support on Oct 21, 2025, 12:01 PM

Will this plug work for natural gas lines, or is it just for hydraulic stuff?

Question by: Wade C on Jul 15, 2025, 9:46 AM

It can be used for fuel, LP, and natural gas applications, but those are available as a special order item. Otherwise, it's good for grease, refrigeration, instrumentation, and hydraulic systems.

Answer by: Customer Support on Jul 16, 2025, 3:36 PM

Got a grease fitting port on a hydraulic manifold I need to cap off. This the right plug for that kind of job?

Question by: Brenda A on Nov 13, 2025, 8:18 PM

Capping off a grease port is exactly the kind of application this plug handles. It runs a 1/8-27 male NPT thread, so as long as your port is a standard 1/8-27 female NPT, it'll seat right in there. No thread sealant comes pre-applied, so you'll want to add your own tape or compound based on what the system calls for.

Answer by: Customer Support on Nov 15, 2025, 4:23 PM

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Model Number	Thread 1	L
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3151X8	1/2-14	0.99