15/16" X 1/4" Pilot Hole HSS Taper Shank Counterbore Shopify Collective Size: #4 (3/16" - 7/8"

Size: #4 (3/16" - 7/8" by 1/16")

The box has a load capacity of 3

Part Number: DUR229-95-16-IND

Each drawer has an organizer bin set: one 11-piece

Part Number DWTSR1-1480

15/16" X 1/4" Pilot Hole HSS Taper Shank Counterbore Shopify Collective Size: #4 (3/16" - 7/8"Product 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