Aeronautical Standard Tube Coupling Nut
Item: AN818-6D  | Coupling Nut
Thread Direction: Right-hand
Thread Class: 3a
Surface Treatment Specification: Cl 2 military specification single treatment response type 2 mil-a-8525
Surface Treatment: Anodize
Specification Data: 88044-an818 government standard
Smallest Inside Diameter: Between 0.440 inches and 0.443 inches
Nut Style: Tube coupling
Nut Height: 0.719 inches
Material Specification: T6 federal specification single material response qq-a-225/4
Material: Aluminum alloy 2014
Length To Shoulder: Between 0.60 inches and 0.63 inches
Fabrication Method: Machined
Thread Qty Per Inch (tpi): 18
Thread Series: Unjf (fine thread with external controlled root radius)
Thread Size: 0.562 inches
Tube Outside Diameter: 0.375 inches
Width Across Flats: Between 0.684 inches and 0.691 inches