Threaded hole bottom depth testing fixture

The utility model provides a threaded hole bottom depth detection tool. The threaded hole bottom depth detection tool comprises a measuring meter, a connecting sleeve and a detection rod. The connecting sleeve is sleeved outside a measuring head of the measuring meter, the top end of the connecting sleeve is connected with the measuring meter, and the bottom end is provided with a threaded section. The top end of the detection rod is arranged in the connecting sleeve and is detachably connected with a gauge rod of the measuring gauge, and the bottom end of the detection rod is connected with adetection block arranged below the connecting sleeve. During measurement, the threaded section is screwed into the threaded hole, so that the bottom end surface of the threaded section abuts againstthe threaded bottom surface of the threaded hole, and the bottom surface of the detection block abuts against the bottom surface of the bottom of the threaded hole. According to the threaded hole bottom depth detection tool of