3/4" X 1/2" Pilots for Counterbore Quantity:1 Part Number: BIT-T/A54846

Part Number: BIT-T/A54846

Part Number: Assortment Kit #211

Alloy Button Socket Head Cap Screws

Flat Washers Zinc Plated

Part Number: 25C250SHCSB

3/4" X 1/2" Pilots for Counterbore Quantity:1 Part Number: BIT-T/A54846Product 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