Patent ID: 6973729

Claim:
A one-piece punch for cutting a hole in a workpiece, said workpiece having a pilot hole provided therethrough, said punch comprising: a punch body having a bore at least partially therethrough; at least one piercing portion extending from said punch body a predetermined distance for piercing the workpiece; at least one cutting portion extending from said punch body a predetermined distance for shearing the workpiece after said at least one piercing portion has pierced the workpiece; and a pair of projections extending from said punch body a predetermined distance and positioned generally opposite of each other and adjacent to said bore of said punch body, said pair of projections capable of centering said punch body with the pilot hole of the workpiece, said pair of projections extending further away from said punch body than said at least one piercing portion such that at least a portion of said pair of projections enters the pilot hole of the workpiece prior to said at least one piercing portion piercing the workpiece.