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

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Description & Features

Designed for demanding industrial environments, the Steel Adapter connects a 3/8-18 Male NPT to a 3/4-16 Female SAE O-Ring Boss. This straight thread adapter is crafted from durable steel, offering reliable performance in applications such as marine, military, chemical processing, and offshore drilling. Its robust construction ensures compatibility with various fluids, making it suitable for use in pulp and paper industries, as well as food and beverage processing. Eaton Aeroquip, a trusted brand, manufactures this component to meet the rigorous standards of industrial use.

Featuring a precise thread design, the adapter facilitates secure connections, minimizing the risk of leaks. Its versatility allows integration into multiple hydraulic systems, providing a dependable solution for fluid transfer and connection needs. The adapter’s compact design with an overall length of 1.45 ensures easy installation in tight spaces without compromising performance.

SKU: 2246-6-8S

Supplier Part Number (MPN): 2246-6-8S

Alternate Part Numbers: C1BD39, MI-00319352, MINO-00015F65418

Specifications

A
1.45
Alternate Part Numbers
Alternate Part Number C1BD39, Alternate Part Number MI-00319352, Alternate Part Number MINO-00015F65418, Alternate Part Number MINO-00925X09708
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
13554
End Gender 2
13555
End Size 1
0.38
End Size 2
0.75
End Type 1
NPTF
End Type 2
SAE ORB
Minimum Working Temperature
-40
Supplier Part Number
2246-6-8S
Thread 1
3/8-18
Thread 2
3/4-16
Thread Sealant
No
Product Weight
0.17 lbs

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Product Questions & Answers (3)

Question by: Lee B on Aug 24, 2025, 7:13 AM
got a port that’s 3/4-16 straight thread ORB, will this adapter take that on the female side and still give me 3/8-18 pipe on the other end?
Answer by: Customer Support on Aug 26, 2025, 6:17 AM
On the female end you get a 3/4-16 SAE O Ring Boss (straight thread O Ring) connection, and the other end is a 3/8-18 male NPTF pipe thread. It is a straight pipe to straight thread O Ring adapter.
Question by: Jimmy P on Jan 22, 2026, 6:18 AM
Will this adapter work with standard NPT fittings, or do I need something special?
Answer by: Customer Support on Jan 23, 2026, 8:08 PM
This adapter is designed with a 3/8-18 Male NPT fitting, so it'll work with standard NPT fittings. The other end is a 3/4-16 Female SAE O-Ring Boss.
Question by: Gary R on May 26, 2025, 2:11 PM
Got a port on a hydraulic valve block that's tapped 3/4-16 SAE and I need to run a 3/8 NPT line off it. This the right adapter for that?
Answer by: Customer Support on May 28, 2025, 6:37 AM
That's what this one's built for. The male end threads into your NPT fitting or port at 3/8-18, and the female end accepts a 3/4-16 SAE O-ring Boss connection on the other side. The O-ring Boss end seals against the face of the port using an O-ring, which keeps things tight without relying on thread deformation the way tapered pipe threads do. Straight configuration means no offset, so it works cleanest when both ports are facing the same direction.