Adjustable wrench

An adjustable wrench comprising:

• a handle, a wrench body and a fixed jaw;
• a floating jaw having serrated teeth along an adjustable shank;
• and
• a singly-grooved, interrupted thread screw adjust driver mounted upon an assembly shaft, wherein the thread screw adjust driver includes helical threads that are interrupted by at least one groove that is continuous along an entire length of the thread screw adjust driver and wherein the groove is parallel to the assembly shaft,
• wherein the assembly shaft is a key-way type shaft,
• wherein the wrench body includes a slot configured to receive the adjustable shank of the floating jaw,
• the interrupted thread screw adjust driver being adjustable to engage the serrated teeth of the floating jaw and adjustable to not engage the serrated teeth of the floating jaw.