49/64" X 1/4" Pilot Hole HSS Straight Shank Counterbore Quantity:1 Part Number DWT60886

Part Number DWT60886

the yellow handle core is made of hard polypropylene

Part Number: BIT-DWTMHX18X1

Height: 65

49/64" X 1/4" Pilot Hole HSS Straight Shank Counterbore Quantity:1 Part Number DWT60886Product Description Counterboring is the enlargement of a portion of a hole that has previously been formed. If the counterbored portion is shallow (1 8" or less), the operations is usually known as spot facing; for example, a flat seat for a bolt head or nut. If, on the other hand, the hole is enlarged to a considerable depth, it is designated as counterboring. These counterbores are made of two piece construction, having an integral shank and