15/64" X 3/32" Pilot Hole HSS Straight Shank Counterbore Shopify Collective The ring groove supports use

The ring groove supports use with retaining rings

Length: 12"

Tap Drill Size 31/64"

Part Number KFD3F1-29/64

Note: Sizes under 11/64" are sold carbide spade construction

15/64" X 3/32" Pilot Hole HSS Straight Shank Counterbore Shopify Collective 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