45/64" X 1/4" Pilot Hole HSS Straight Shank Counterbore Shopify Collective Size m30 x 1

Size m30 x 1

Part Number DWDTS1-1/32

Part Number DWRRHDES5/16

Part Number DWDRSD34X1-15/32

Part Number DWRRADJ8/A

45/64" X 1/4" Pilot Hole HSS Straight Shank Counterbore Shopify Collective Size m30 x 1Product 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