7/16" X 5/32" Pilot Hole HSS Taper Shank Counterbore Quantity:1 Cobalt screw machine drills (also

Cobalt screw machine drills (also know as stub or stubby drills) are manufactured to Aerospace Standard 907

Part Number DWTSMT12X1

This Tekton tool set is part of the L-BOXX Stacking Organization System and connects with all other components in the L-BOXX family of products

Part Number DEW2120

Part Number DWT54782

7/16" X 5/32" Pilot Hole HSS Taper Shank Counterbore Quantity:1 Cobalt screw machine drills (alsoProduct 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