Drill America DEWCBR1-13/16 1-13/16" X 7/16" Pilot Hole HSS Straight Shank Counterbore, DEWCBR1-13/16 Shop by Category > Hand Tools > Wrenches>Flare Nut/Crow Foot Coilhose Pneumatics FRL1000MB 1" General

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Drill America DEWCBRTS1-3/4 1-3/4" X 7/16" Pilot Hole HSS Taper Shank Counterbore

Drill America DEWCBR1-13/16 1-13/16" X 7/16" Pilot Hole HSS Straight Shank Counterbore, DEWCBR1-13/16 Shop by Category > Hand Tools > Wrenches>Flare Nut/Crow Foot Coilhose Pneumatics FRL1000MB 1" GeneralDrill America DEWCBR1 13 16 1 13 16" X 7 16" Pilot Hole HSS Straight Shank Counterbore, DEWCBR1 13 16 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