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FD56 SS Female1IN

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Description & Features

Constructed entirely from stainless steel, the FD56 SS Female1IN is a 1-inch female half quick disconnect coupling designed for demanding hydraulic fluid transfer applications. Its ball lock internal mechanism and push-to-connect end type allow fast, tool-free connection and disconnection, reducing downtime in agricultural, construction, and in-plant manufacturing environments, as well as on dump trucks, snow plows, and maintenance vehicles.

Rated for flows up to 50 gallons per minute and built to exceed ISO 16028 operating pressures, this coupling meets ISO 7241-1 Series A certification. The 1-inch NPT port accepts a wide range of hydraulic lines, while Buna-N seals provide reliable fluid compatibility across a working temperature range starting at -40°F. The two-way valve configuration supports standard bidirectional flow in hydraulic circuits.

SKU: 560024-16-16

Supplier Part Number (MPN): 560024-16-16

Specifications

Brand
Aeroquip® by Danfoss
Connection Size 1
1 in
Connection Size 2
1 in
Connection Style
Manual
Connection Type
FNPT, Push-Fit
Connection Type 1
Female Push-to-Connect
Connection Type 2
Female NPT
Dimensions
3.82 in L
Fitting Type
Coupling
Hex Size
1.688 in
Latch Type
Push/Pull
Material
Stainless Steel
Material Construction
Stainless Steel
Maximum Operating Pressure
4000 psi
Operating Temperature
-40 to 250 deg F
Seal Material
NBR
Series
5600 Series
Thread Size
1-11-1/2
Valve Type
2-Way

Product Questions & Answers (1)

Question by: Diane P on Feb 16, 2026, 1:51 PM
If I'm swapping out an old coupling on my backhoe, and the lines are 1-inch NPT, will this one screw right in?
Answer by: Customer Support on Feb 18, 2026, 8:03 AM
Because this is a 1-inch female NPT coupling, it should thread directly onto your existing 1-inch NPT hydraulic lines.

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