1-15/16" X 7/16" Pilot Hole HSS Taper Shank Counterbore Quantity:1 Adjusting screw is tightened to

Adjusting screw is tightened to get the proper size

The socket is made is made from 6140 chromium-vanadium steel that's heat-treated to 40–47 HRC for use on impact wrenches

9 Hex Serrated Flange Nuts JIS B1190 Zinc Clear

Part Number DEWA/CCBR1/4

Part Number DWDTLCT7/32

1-15/16" X 7/16" Pilot Hole HSS Taper Shank Counterbore Quantity:1 Adjusting screw is tightened toProduct 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