Pole Top Adapter, Fits pole Diameter 4 in. Bronze #313

These adapters are used in mounting a truck that has a spindle threading of 1 1/4 in. NPT and the pole does not have a threaded top plug installed. The adapter is tapped 1 1/2 in. NPT and is designed to slip over the top of the pole and is secured by three 1/4 in. -20NC stainless steel set screws.