1-1/16" X 5/16" Pilot Hole HSS Taper Shank Counterbore Tekton Part Number DWRRSP23/32

Part Number DWRRSP23/32

Part Number: EZ-SK30615

and are chrome-plated for corrosion resistance

Part Number: Assortment Kit #114575 Pieces - Coarse Thread

Size m45 x 3

1-1/16" X 5/16" Pilot Hole HSS Taper Shank Counterbore Tekton Part Number DWRRSP23/32Product 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