Part Number: 209-010-420-1

Aluminum bronze qq-c-450, cadmium-plated qq-p-416 class 2 type 2, dim., 1.250 in. Nom lg, 5.500 in. Nom flange odby 0.300 in. Nom flange w, 4.248 in. Min, 4.250 in. Max body od by 0.440 in. Nom lg, 4.590 in. Nom counterbore on flange side by 0.500 in. Deep, internal involute spline data, fillet root side bearing sliding class a fit, 38 teeth theoretical 0.750 in. Lg, master tooth located at 222.75 deg, 30.0 degrees pressure angle, 3.8000 in. Pitch dia, 3.7000 in. Min, 3.7025 in. Max minor dia, 3.9800 in. Min, 3.9950 in. Max major dia, six mounting holes 0.254 in. Diameter located on 5.614 in. Diameter bolt circle, item used oncollective hub drive, main rotor