Improve bolt of structure

The utility model relates to a bolt belongs to a fastener. The utility model provides an improve bolt of structure, includes bolt head and screw rod, be equipped with the screw thread on the screw rod, still be equipped with fore -and -aft machine oil groove on the screw rod, machine oil inslot portion is equipped with adsorbs the piece, the upper portion of bolt head is opened flutedly, the inside magnetic core that is equipped with of recess, the bottom of bolt head centers on the screw rod is fixed with the packing ring by the magnetic material preparation. The utility model has the advantages that: the utility model discloses a bolt, the cost of manufacture low and also can be permanent have magnetism, in addition the utility model discloses a bolt can effectively prevent to rust, the easy dismantlement.