- Overview
- Related Products
COLORED POWER. Aeroflow Performance Tube Nut & Tube Sleeves help attach steel or aluminium hardline to a 37-degree AN fitting. When a flexible hose assembly doesn't work in an application or rules prohibit it, tube nuts and sleeves helpfabricate a hard line for connection to AN style fittings and adapters. The flare tool required for this is sold separately .Both the tube nut and tube sleeve must be used in conjunction with each other in order for them to work. Slip the Tube Nut onto the hard line first, followed by the Tube Sleeve. Then use a 37° flaring tool to flare the end of the tubing. When you screw the Tube Nut onto a male AN fitting, the Tube Sleeve will protect the end of your hard line.