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Steel Adapter, 1/2-14 Male NPT Countersunk Hex Plug

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Description & Features

Manufactured by Eaton Aeroquip as part of the 2222 Series, this Steel Adapter, 1/2-14 Male NPT Countersunk Hex Plug is designed for use in grease, instrumentation, and most hydraulic system applications. The countersunk hex configuration allows for flush or recessed installation where standard hex access is limited.

With a 1/2-14 NPT male thread and compact dimensions (A: 0.61 in., B: 0.38 in.), this plug is well suited for port sealing in tight assemblies. Steel construction provides the durability expected in demanding industrial environments.

SKU: 2222-8S

Supplier Part Number (MPN): 2222-8S

Alternate Part Numbers: C1BC91, MI-00298912, MINO-00015F47343

Specifications

A
0.61
Alternate Part Numbers
Alternate Part Number C1BC91, Alternate Part Number MI-00298912, Alternate Part Number MINO-00015F47343
Application
Other - Grease, instrumentation, and most hydraulic systems
B
0.38
Brand
Danfoss Power Solutions (II LLC Aeroquip)
Brand
Aeroquip
Pack Size
1.00
UOM
EA
End Gender 1
13554
End Size 1
0.50
End Size 2
0.50
End Type 1
NPTF
Minimum Working Temperature
-40
Supplier Part Number
2222-8S
Thread 1
1/2-14
Thread Sealant
No
Tube I.D. 1
0.38
Product Weight
0.06 lbs

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Product Questions & Answers (3)

Question by: Jean W on Oct 31, 2025, 6:53 AM
got a 1/2-14 npt port i need to cap off, is this the right plug for that
Answer by: Customer Support on Nov 1, 2025, 9:33 AM
For a 1/2-14 male NPTF thread match, this plug fits that thread size and end type. It is a countersunk hex plug made for pipe-to-pipe steel adapter use, so it is intended to close off a matching NPTF female port.
Question by: Pete S on Jun 1, 2025, 2:31 PM
Is this plug gonna work okay for hydraulic systems, or is it more for somethin' else?
Answer by: Customer Support on Jun 2, 2025, 9:39 PM
It’s made to work in most hydraulic systems, plus grease and instrumentation applications.
Question by: Sheila H on Jul 18, 2025, 12:10 PM
what all is this plug rated for use on? grease systems, hydraulic, or just one or the other?
Answer by: Customer Support on Jul 20, 2025, 6:44 AM
Grease, instrumentation, and most hydraulic systems all fall within the listed application range for this plug. It's a 1/2-14 male NPT fitting from Eaton Aeroquip's 2222 series, so it covers a pretty broad spread of common fluid system types rather than being locked into just one.