Min. Order Reference FOB Price
500 PCS US$0.542 / PCS
Product Description
HSS Countersink Drill Bit for Metal Drilling A countersink is a conical hole cut into a manufactured object, or the cutter used to cut such a hole. A common use is to allow the head of a countersunk bolt or screw, when placed in the hole, to sit flush with or below the surface of the ...