1-1/2" X 3/8" Pilot Hole HSS Taper Shank Counterbore Quantity:1 Part Number: 87FHLNL9Y

Part Number: 87FHLNL9Y

Part Number DWDTL29/32

Grade 8 Hex Flange Bolts IFI-111 Black Phosphate & Oil

Part Number D/ARSD61/64

Part Number DWDTS43/64-3MT

1-1/2" X 3/8" Pilot Hole HSS Taper Shank Counterbore Quantity:1 Part Number: 87FHLNL9YProduct 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