The support base structure of the lock nut chisel and the lock nut chisel and the caulking section of the lock nut which is caulked

摘要

PROBLEM TO BE SOLVED: To provide a lock nut chisel capable of certainly removing a calked part of a lock nut calked to a bolt.;SOLUTION: The lock nut chisel 1A is for removing the calked part of the lock nut. On an outer periphery of the lock nut chisel 1A contacted with the calked part, a first curved surface part 11 of a projection shape is provided toward an outer side.;COPYRIGHT: (C)2009,JPO&INPIT