5/8" X 1/4" Pilots for Counterbore Quantity:1 Length: 30MM

Length: 30MM

Part Number KFDRB15/16HEX-LONG-MAG

Part Number D/ARSD1-5/64

Part Number T/A57151TN

Overall Length 4-3/8"

5/8" X 1/4" Pilots for Counterbore Quantity:1 Length: 30MMProduct 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