1 PL Dowty/Ultra Pattern Gear Pumps - Front/ Single Pump.Clockwise Rotation.Displacement: 036cc/ rev ( 036 Litres at 1000 rpm).5/8” (15.875mm) SAE A 9 tooth spline shaft, actual diameter: 15.456mm, nominal diameter: 5/8” [15.875mm], J498-9T 16/32 DP Flat root side fit, 32.5mm stand out from face of flange.4 bolt mounting flange in the shape of a rectangle 71.42mm x 96.19mm with a pilot 36.47mm diameter x 4.8mm high.BSP threaded port Inlet: ¾” BSPF Outlet: ½” BSPF.Modular front/ Intermediate section.Nitrile Shaft Seal