Drill America DEWCBR19/64 19/64" X 3/32" Pilot Hole HSS Straight Shank Counterbore, DEWCBR19/64 Shop By Category > Hand Tools > Cutters>Rotabroach Cutters Fittings 3/8" MPT Rigid

Fittings 3/8" MPT Rigid

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Drill America DEWCBR19/64 19/64" X 3/32" Pilot Hole HSS Straight Shank Counterbore, DEWCBR19/64 Shop By Category > Hand Tools > Cutters>Rotabroach Cutters Fittings 3/8" MPT RigidDrill America DEWCBR19 64 19 64" X 3 32" Pilot Hole HSS Straight Shank Counterbore, DEWCBR19 64 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