Abstract: A coupling arrangement is made vibration-proof based on mating male and female spline members. The male spline member is incorporated into the outside diameter of a shaft, while the female spline member is incorporated into the bore of a coupling hub. The spline shaft is received in the spline bore. The coupling hub includes two perpendicular cuts through the splined portion thereof, to permit selected radially-inward compression of such portion for shrink fitting thereof onto the spline shaft. The outside diameter of such coupling hub splined portion is also adapted for receiving a clamping collar, which may be tightened to compress the hub and effect a tight fit with the splined shaft, thereby facilitating the application of effective clamping force, while eliminating all play and fretting corrosion between the shaft and coupling hub.