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Aeroquip Crimp FittingS - Code

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Brand
Danfoss Power Solutions (II LLC Aeroquip)
Brand
Aeroquip
Pack Size
1.00
UOM
EA
End Gender 1
13553
End Gender 2
13555
End Size 1
0.44
End Size 2
0.25
End Type 1
SAE 37
End Type 2
Line/Hose/Tube
Features
Dura-Kote plating for superior corrosion resistance|Innovative design to deliver performance and maximum uptime|System engineered to extend hose assembly life
Hex Size 2
0.44
Hose Dash Size
-4
ICC
Hose Fittings
Item Type
Fitting Assembly
Language
English
Product Material
Carbon Steel
Product Width
0.56
Sub Brand
Aeroquip
Supplier Part Number
FC9779-0404S
Product Weight
0.04 lbs
Product Questions & Answers 5

Product Questions & Answers

what's the coating on these fittings, are they gonna hold up if they're sitting in a wet or greasy environment most of the time?
Question by: Billy M on Dec 17, 2025, 9:18 AM
Dura-Kote plating is what sets these apart from bare steel fittings. That finish is specifically built for corrosion resistance, so exposure to moisture, grease, and general shop grime is exactly what it's meant to handle. Carbon steel underneath gives you solid structural strength, and the plating keeps rust from getting a foothold. For a wet or greasy environment, that combination works in your favor.
Answer by: Customer Support on Dec 18, 2025, 1:35 PM
What kind of corrosion resistance can I expect from these fittings?
Question by: Brenda T on Jan 20, 2026, 6:38 AM
Dura-Kote plating provides superior corrosion resistance on these Aeroquip crimp fittings.
Answer by: Customer Support on Jan 21, 2026, 6:51 AM
trying to match up ends on this fitting, what are the two end types and sizes?
Question by: Bobby H on Sep 30, 2025, 11:53 AM
On one side you have an SAE 37 degree female end sized at 0.4375. The other side is a female Line/Hose/Tube end sized at 0.25.
Answer by: Customer Support on Oct 1, 2025, 7:17 PM
what's the corrosion resistance like on these fittings? got equipment sitting outside between uses and rust has been a real problem with cheaper parts
Question by: Keith G on Feb 14, 2026, 8:17 PM
Carbon steel fittings like this one usually raise that concern, but Eaton Aeroquip puts a Dura-Kote plating on the FC9779 series specifically to fight corrosion. It's a step up from standard zinc plating you'd find on lower-cost alternatives, so exposure between uses shouldn't eat through these the way bare steel would.
Answer by: Customer Support on Feb 16, 2026, 7:06 PM
got a -4 hose setup, is this FC9779-0404S the right crimp end for it?
Question by: Brent G on May 7, 2025, 8:11 PM
The key callout here is the hose dash size. This fitting is specified for a -4 hose, so it matches a -4 hose assembly on the crimp side.
Answer by: Customer Support on May 8, 2025, 9:15 PM