5/8" X 3/16" Pilots for Counterbore Quantity:1 Part Number: Assortment Kit #403527

Part Number: Assortment Kit #403527 Pieces - Coarse Thread

Part Number: VibraTite907116oz

Part Number DWDDL12X39/64

Part Number D/ARSD15/32

5/8" X 3/16" Pilots for Counterbore Quantity:1 Part Number: Assortment Kit #403527Product 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