A pallet fork includes a frame having a top support tube and a bottom support tube between opposing end plates. A fork bar and a carriage plate are supported by the frame. A fork tine is mounted to the fork bar via a slotted tube. The fork tine includes a vertical leg and a horizontal leg. The slotted tube is at an upper portion of the vertical leg. A locking plate is provided on the top support tube. An upper locking member selectively inserted through a slot in the slotted tube and through one of a plurality of notches to engage the vertical leg of the fork tine with the locking plate and restrict lateral motion of the fork tine. The upper locking member has a head portion with an open point that rests on a top surface of the top support tube.