A torque-adjustable tapping apparatus includes a tap, a wrench and a torque-adjusting mechanism including a shell, a primary adjuster and a clutch. The shell is connected to the wrench. The shell includes an internally threaded section. The primary adjuster includes an externally threaded section engaged with the internally threaded section. The clutch includes an upper gear and a lower gear. The upper gear includes teeth extending from a lower face and at least one restraining cutout in a periphery. The lower gear includes teeth extending from an upper face and a connective rod extending from a lower face. The teeth of the lower gear are engaged with the teeth of the upper gear. The connective rod is connected to the tap. At least one screw is inserted in the restraining cutout through the screw hole. A spring is compressed between the primary adjuster and the upper gear.

A torque-adjustable tapping apparatus includes a tap, a wrench and a torque-adjusting mechanism including a shell, a primary adjuster and a clutch. The shell is connected to the wrench. The shell includes an internally threaded section. The primary adjuster includes an externally threaded section engaged with the internally threaded section. The clutch includes an upper gear and a lower gear. The upper gear includes teeth extending from a lower face and at least one restraining cutout in a periphery. The lower gear includes teeth extending from an upper face and a connective rod extending from a lower face. The teeth of the lower gear are engaged with the teeth of the upper gear. The connective rod is connected to the tap. At least one screw is inserted in the restraining cutout through the screw hole. A spring is compressed between the primary adjuster and the upper gear.