4 DP Gear Hob Cutter 20° PA RH HSS AA National Broach WD-5838 Spline Hob

Type: Gear Hob Cutter (special / spline-type). Diametral Pitch: 4 DP. Pressure Angle: 20° PA. Starts: 1 THD (single-start). Pitch Diameter: 18.81. Spec / Drawing: WD-5838. Standard: MIL-CH / US spec.