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Steel Adapter, 3/4-16 Male SAE O-Ring Boss (Straight Thread O-Ring) To 9/16-18 Female SAE O-Ring Boss (Straight Thread O-Ring), Straight

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Description & Features

Designed for demanding industrial environments, the Steel Adapter, 3/4-16 Male SAE O-Ring Boss to 9/16-18 Female SAE O-Ring Boss, ensures reliable fluid connections in marine, military, chemical processing, pulp and paper, food and beverage, and off-shore drilling applications. Made by Eaton Aeroquip, this adapter features a robust construction that provides durability and compatibility with a wide range of fluids.

The straight-thread O-ring design ensures a secure and leak-resistant connection, crucial for maintaining system integrity under high pressure. With a measurement of A: 1.06, this adapter offers precise fitment, enhancing the performance and reliability of hydraulic systems.

SKU: FF1010-0806S

Supplier Part Number (MPN): FF1010-0806S

Alternate Part Numbers: C1CU56, MI-00303285, MINO-00015F52127

Specifications

A
1.06
Alternate Part Numbers
Alternate Part Number C1CU56, Alternate Part Number MI-00303285, Alternate Part Number MINO-00015F52127
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
0.75
End Size 2
0.56
End Type 1
SAE ORB
End Type 2
SAE ORB
Minimum Working Temperature
-40
Supplier Part Number
FF1010-0806S
Thread 1
3/4-16
Thread 2
9/16-18
Thread Sealant
No
Product Weight
0.10 lbs

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Product Questions & Answers (2)

Question by: Larry M on Nov 30, 2025, 9:06 AM
Will this adapter hold up in a saltwater environment on my boat?
Answer by: Customer Support on Dec 2, 2025, 6:47 AM
This steel adapter is suitable for marine applications, offering a durable and reliable fluid connection. It's also used in offshore drilling, so it should handle saltwater pretty well.
Question by: Patty B on Nov 16, 2025, 5:11 PM
got a 3/4-16 male SAE O-ring boss port on a hydraulic block and need to step it down to a 9/16-18 female connection, this the right adapter for that?
Answer by: Customer Support on Nov 17, 2025, 6:08 PM
That's what this one does. The male end threads into your 3/4-16 SAE O-ring boss port, and the female end accepts a 9/16-18 SAE O-ring boss fitting. Both ends use straight-thread O-ring sealing, so you get a leak-resistant connection without relying on thread deformation to hold pressure. It's made by Eaton Aeroquip, part of their FF1010 series, and the overall length on dimension A comes in at 1.06 inches.