Drilling bit for hardware punching

The invention provides a drilling bit for hardware punching. The drilling bit is characterized by comprising a connecting rod, a fixing seat and a drilling bit body, one end of the fixing seat is provided with a connecting rod installing groove which is used for inserting the connecting rod, a fastening through hole which is used for fastening the connecting rod is communicated with the connectingrod installing groove, a drill bit installing groove is formed in the other end of the fixing seat, a plug which is formed by the connecting of three rectangular blocks are arranged at one end of thedrilling bit, the other end of the drilling bit is provided with a protruded block, and the fixing seat is provided with a clamping groove which is clamped with the drilling bit and formed by three rectangular grooves. The drilling bit has the advantages of reasonable structural design, convenient use and the like, and the drilling bit has great economical value and using value. 本发明提供种用于五金制件打孔的钻头，其特征在于：包括连接杆，固定座和钻头，所述固定座端