Faucet quick install nut

The mounting nut includes a first segment and a second segment attached by a hinge portion. The hinge portion provides for expansion of the mounting nut to bend onto itself in a clamshell like manner. The hinged mounting nut is slidable over a water connection fitting such that the mounting nut can be slid over the water connection fitting and up against the bottom-mounting surface to secure a faucet assembly to a sink deck.