Hexagon wrench

The invention belongs to the technical field of mechanical tools, and provides a hexagon wrench. The plate-shaped hexagon bolt dismounting device is used for dismounting plate-shaped hexagon bolts and comprises a first working part, a connecting part and a second working part which are sequentially connected, the first working part and/or the second working part are/is provided with an inner hexagon through hole, a notch is formed in the peripheral side of the first working part and/or the second working part, and the notch is communicated with the inner hexagon through hole. According to the device, the plate-shaped hexagon bolt for clamping the proximity switch can be fastened or disassembled under the conditions that a lead of the proximity switch is not disassembled and power is not cut off, the operation process is convenient, safe, efficient and reliable, the maintenance time is shortened, the productivity of a production line is effectively improved, the structure is simple, the manufacturing cost is l