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Steel Adapter, 3/8-18 Female NPT Swivel To 3/4-16 Male SAE O-Ring Boss (Straight Thread O-Ring), Straight

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Description & Features

Designed for demanding environments, the Eaton Aeroquip Steel Adapter offers a reliable connection with its 3/8-18 Female NPT Swivel and 3/4-16 Male SAE O-Ring Boss configuration. This robust adapter is ideal for applications in marine, military, chemical processing, pulp and paper industries, food and beverage processing, and off-shore drilling. Crafted from premium steel, it ensures durability and strength, making it suitable for high-pressure hydraulic systems.

The straight design of this adapter facilitates seamless integration into existing systems, providing a secure and leak-free connection. With a compact length of 1.19 inches, it is engineered to fit efficiently in tight spaces without compromising performance. The product belongs to the Danfoss / Eaton 2066 Series, known for its quality and reliability in industrial settings.

SKU: 2066-6-8S

Supplier Part Number (MPN): 2066-6-8S

Alternate Part Numbers: C1AZ77, MI-00321851, MINO-00015F66133

Specifications

A
1.19
Alternate Part Numbers
Alternate Part Number C1AZ77, Alternate Part Number MI-00321851, Alternate Part Number MINO-00015F66133
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
0.75
End Type 1
NPSM
End Type 2
SAE ORB
Hex Size 2
0.88
Minimum Working Temperature
-40
Supplier Part Number
2066-6-8S
Thread 1
3/8-18
Thread 2
3/4-16
Thread Sealant
No
Product Weight
0.14 lbs

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Product Questions & Answers (2)

Question by: Cheryl R on Oct 12, 2025, 9:41 AM
what industries is this adapter actually built for? seen a lot of adapters marketed as "universal" but they end up being junk in anything demanding
Answer by: Customer Support on Oct 13, 2025, 5:28 PM
Built and listed under the Eaton Aeroquip 2066 Series, this steel adapter sees real use across marine and military applications, chemical processing, pulp and paper use, food and beverage processing, and offshore drilling. Those are not light-duty environments, so the construction reflects that. If your application falls into any of those categories, it fits right in with what this part was intended for.
Question by: Todd C on Nov 14, 2025, 4:33 PM
Will this adapter work to connect a standard NPT pipe to something with a SAE O-ring port?
Answer by: Customer Support on Nov 16, 2025, 6:26 AM
That's exactly what it's for. This adapter will let you connect a 3/8-18 female NPT pipe to a 3/4-16 male SAE O-ring boss.