9/16" X 5/16" Pilots for Counterbore Quantity:1 Part Number DWTB16X2

Part Number DWTB16X2

Part Number D/ADIE31/64

Part Number DWDA/CX6Q

Part Number DWDTS2-1/4

Part Number: assortment-kit-367Dome Head Blind Rivets Steel/Steel Mandrel

9/16" X 5/16" Pilots for Counterbore Quantity:1 Part Number DWTB16X2Product 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