5/16" X 3/32" HSS Aircraft Counterbore 1/4" Shank Shopify Collective Part Number CTH3562

Part Number CTH3562

and the ends of the handles flare out prevent them from slipping out of your hand

Part Number T/A54930

Deep-length sockets feature fully-stepped shoulders for reaching into tight

Part Number GLBCOX65/16

5/16" X 3/32" HSS Aircraft Counterbore 1/4" Shank Shopify Collective Part Number CTH3562Product 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