3" X 1/2" Pilot Hole HSS Straight Shank Counterbore Quantity:1 The ring groove supports use

The ring groove supports use with retaining rings

Part Number DEWMSK5/8-60

Part Number: BIT-DWDRSD1/2

Phillips Pan Head Self Tapping Screws Zinc

Part Number: BIT-DMS04-1111

3" X 1/2" Pilot Hole HSS Straight Shank Counterbore Quantity:1 The ring groove supports useProduct 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