Description
When precision and reliability matter, the Aeroquip #4 Steel Tube Nut (FCM3570) delivers the secure, leak-free connection your fuel, oil, or brake lines demand. Built to AN standards with a tough nickel-plated finish, this fitting is a go-to choice for performance builders and weekend warriors alike. Grab one and enjoy the confidence that comes with a trusted Aeroquip component.
- Part Number: FCM3570
- Type: Tube Nut Fitting
- AN Size: 4 AN
- Tube Size: 1/4 in.
- Material: Steel
- Finish: Nickel Plated
- Quantity: Sold Individually
Whether you’re building a custom race car or restoring a classic, this Aeroquip tube nut is a small part that makes a big difference. The nickel plating resists corrosion and keeps things looking clean under the hood, while the solid steel construction ensures it holds up under pressure — literally.






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