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Brass Adapter, 3/8-18 Male NPT To 1/4-18 Male NPT, Straight Hex Nipple

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Description & Features

The Brass Adapter 3/8-18 Male NPT To 1/4-18 Male NPT Straight Hex Nipple is designed to meet various industrial applications such as grease refrigeration instrumentation and hydraulic systems. Manufactured by Danfoss Power Solutions (Aeroquip Inc-Alternate) this hex nipple provides reliable and durable connections between differing NPTF threads.

Made from high-quality brass this adapter ensures durability and long-lasting performance. It offers a seamless transition with its 3/8-18 male NPT to 1/4-18 male NPT threading.

Its construction supports a wide range of temperatures operating efficiently from -65F to 250F. With no thread sealant required it becomes a crucial component in fuel LP and natural gas systems available on special order.

End Size 1 is 0.375 inches while End Size 2 measures 0.25 inches ensuring compatibility with various system requirements. Thread Type 1 and 2 are both NPTF providing a secure and tight fit for demanding industrial environments.

Catalog Number: C1HP27

Supplier Part Number: 3325X6X4

Product Model Label: Pipe To Pipe Brass Adapters

Specifications

Alternate Part Numbers
Alternate Part Number C1HP27, Alternate Part Number FMC103-1731, Alternate Part Number MI-00333692, Alternate Part Number MINO-00015X05707, Alternate Part Number MINO-00925F73259
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 Gender 2
13556
End Size 1
0.38
End Size 2
0.25
End Type 1
NPTF
End Type 2
NPTF
L
1.41
Minimum Working Temperature
-65
Supplier Part Number
3325X6X4
Thread 1
3/8-18
Thread 2
1/4-18
Thread Sealant
No
Product Weight
0.07 lbs

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Product Questions & Answers (1)

Question by: Phil B on Jul 21, 2025, 4:11 PM
does this thing work for both refrigeration lines and hydraulic setups, or is it just one or the other
Answer by: Customer Support on Jul 23, 2025, 6:52 AM
Brass fits both without issue. The adapter is rated for grease, refrigeration, instrumentation, and hydraulic systems all under the same part. Fuel, LP, and natural gas use is also possible but those require a special order rather than standard stock.