1-11/16" X 7/16" Pilot Hole HSS Straight Shank Counterbore Shopify Collective Part Number DWRR1-7/16

Part Number DWRR1-7/16

Part Number DWDA/CX1243

Part Number ANC5-530-369

Slotted bits: 0

1-11/16" X 7/16" Pilot Hole HSS Straight Shank Counterbore Shopify Collective Part Number DWRR1-7/16Product 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