Brass Adapter, 1/4-18 Male NPT Square Head Plug

Description & Features

The Danfoss / Eaton pipe products square head plug ensures high performance in various industrial applications, including grease, refrigeration, and instrumentation systems. Featuring a 1/4-18 thread and male NPT end, this brass adapter offers reliable and durable connections.

Engineered for a wide range of operational conditions, this component operates efficiently from -65deg;F and addresses the demanding requirements of hydraulic systems. Suitable for fuel, LP, and natural gas applications upon special order, it provides flexibility in its usage.

Constructed from high-quality brass, this adapter guarantees a robust and corrosion-resistant solution for your vital industrial systems. Its square head design enables easy installation and removal, adding convenience and functionality to your operations.

Supplier Part Number: 3151X4

MPN: C1HN80

Specifications

Alternate Part Numbers
Alternate Part Number C1HN80, Alternate Part Number MI-00333535, Alternate Part Number MINO-00015X05483, Alternate Part Number MINO-00925F73227
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
0.25
End Type 1
PTF SAE Short
L
0.74
Minimum Working Temperature
-65
Supplier Part Number
3151X4
Thread 1
1/4-18
Thread Sealant
No
Product Weight
0.04 lbs

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Product Questions & Answers (2)

Question by: Frank F on Nov 2, 2025, 9:39 PM
got a 1/4-18 NPT port i need to cap off, is this the right plug for that?
Answer by: Customer Support on Nov 4, 2025, 4:11 PM
For a 1/4-18 male NPT thread match, this plug is set up with 1/4-18 male threads, so it fits ports and fittings that take that same 1/4-18 NPT connection.
Question by: Roy P on Apr 19, 2025, 9:55 PM
Will this plug work with hydraulic systems, or is it mainly for other stuff like refrigeration?
Answer by: Customer Support on Apr 21, 2025, 12:42 PM
It's made to work in hydraulic systems, along with grease, refrigeration, and instrumentation setups. You can even get it special-ordered for fuel, LP, and natural gas applications too.