25/32" X 1/4" Pilot Hole HSS Straight Shank Counterbore Quantity:1 Part Number KFD3F3/4

Part Number KFD3F3/4

Diameter / Pitch: 5/8"-11

Part Number DWRRSS2-1/16

Part Number DWTSH1-3/16-12

Part Number GLBCOX1228

25/32" X 1/4" Pilot Hole HSS Straight Shank Counterbore Quantity:1 Part Number KFD3F3/4Product 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