Danfoss / Eaton FD51 Coupling Male

Description & Features

The Danfoss / Eaton FD51 Coupling Male is a reliable solution for hydraulic tool applications, offering seamless fluid transfer through its quick connect and disconnect capability. Crafted from durable brass with a Buna-N seal, this coupling ensures longevity and robust performance. The male half features a 9/16-inch port size, designed to exceed ISO 16028 operating pressures, making it suitable for demanding industrial environments.

This coupling is equipped with a push-to-connect end type on one side and an SAE connection on the other, facilitating easy integration into various systems without the need for specialized tools. The safety locking mechanism, featuring a ring lock, enhances security during operation, while the compact design with a product width of 1.03 inches and a lightweight of 0.02 lb contributes to its ease of use and handling.

SKU: FD51-1261-06-05

Supplier Part Number (MPN): FD51-1261-06-05

Specifications

Brand
Danfoss
Connection Size 1
3/8 in
Connection Size 2
5/16 in
Connection Type
Female SAE, Male Quick-Disconnect
Connection Type 1
Male Quick Disconnect
Connection Type 2
Female SAE
Dimensions
1.03 in Dia x 2.27 in L
Fitting Type
Coupling
Hex Size
0.94 in
Material
Steel
Material Construction
Carbon Steel
Maximum Operating Pressure
3000 psi
Operating Temperature
-40 to 250 deg F
Safety Locking Mechanism
Ring Lock
Seal Material
NBR
Series
FD51 Series
Thread Size
9/16-18
Valve Type
2-Way

Product Questions & Answers (1)

Question by: Hugh T on Jan 1, 2026, 11:16 AM
Is this coupling somethin' I can hook up without special tools?
Answer by: Customer Support on Jan 3, 2026, 6:53 AM
it's made to be quick to connect and disconnect without needing any special tools.

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