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Steel Adapter, 3/8-18 Female NPT Swivel To 9/16-18 Male SAE O-Ring Boss (Straight Thread O-Ring), Straight

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Description & Features

This steel adapter facilitates connections between dissimilar thread types, with a 3/8-18 female NPT swivel end and a 9/16-18 male SAE O-ring boss. The straight configuration offers a compact and direct connection point.

Designed for demanding applications, this Eaton Aeroquip adapter is suitable for use in marine and military environments, chemical processing, pulp and paper industries, food and beverage processing, and off-shore drilling.

SKU: 2066-6-6S

Supplier Part Number (MPN): 2066-6-6S

Alternate Part Numbers: C1AZ76, MI-00321835, MINO-00015F66131

Specifications

A
1.14
Alternate Part Numbers
Alternate Part Number C1AZ76, Alternate Part Number MI-00321835, Alternate Part Number MINO-00015F66131, Alternate Part Number MINO-00925X09325
Application
Marine/Military, Chemical Processing, Pulp and Paper Industries, Food and Beverage Processing, Off-Shore Drilling
Brand
Danfoss Power Solutions (II LLC Aeroquip)
Brand
Aeroquip
Pack Size
1.00
UOM
EA
End Gender 1
13553
End Gender 2
13556
End Size 1
0.38
End Size 2
0.56
End Type 1
NPSM
End Type 2
SAE ORB
Hex Size 2
0.88
Minimum Working Temperature
-40
Supplier Part Number
2066-6-6S
Thread 1
3/8-18
Thread 2
9/16-18
Thread Sealant
No
Product Weight
0.05 lbs

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Product Questions & Answers (3)

Question by: Lee J on Dec 27, 2025, 8:32 PM
what industries is this adapter actually used in? trying to figure out if it'd work for our setup before i order
Answer by: Customer Support on Dec 29, 2025, 6:38 AM
Marine, military, chemical processing, pulp and paper, food and beverage, and offshore drilling are all listed applications for this fitting. It covers a pretty wide range of demanding environments, so if your operation falls into any of those categories, you're in good shape. The 3/8-18 female NPT swivel on one end connects to a 9/16-18 male SAE O-ring boss on the other, straight through, no angle.
Question by: Patty A on Dec 22, 2025, 11:16 AM
got a hose end with 3/8-18 female npt swivel. is this the right adapter to jump over to an SAE o-ring boss?
Answer by: Customer Support on Dec 23, 2025, 6:54 PM
For that setup, this adapter matches a 3/8-18 female NPT swivel on one side and a 9/16-18 male SAE O-ring boss (straight thread O-ring) on the other, in a straight configuration.
Question by: Kent H on Mar 5, 2026, 7:09 PM
Is this the right fitting to go from a pipe thread to an O-ring boss?
Answer by: Customer Support on Mar 6, 2026, 7:20 PM
This adapter will connect a 3/8-18 female NPT pipe thread to a 9/16-18 male SAE O-ring boss.

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