1-7/8" X 7/16" Pilot Hole HSS Taper Shank Counterbore BoltsandNuts.com Part Number: Assortment Kit #2901148

Part Number: Assortment Kit #2901148 Pieces - Coarse Thread

Part Number DWDTLCO13/32

Part Number DWTMR2-16X2

Flute Length 13-3/8"

Shank Size: 5/8"

1-7/8" X 7/16" Pilot Hole HSS Taper Shank Counterbore BoltsandNuts.com Part Number: Assortment Kit #2901148Product 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