11/16" X 1/4" Pilots for Counterbore Quantity:1 Part Number: EZ-EZ-A500

Part Number: EZ-EZ-A500

single cut on both edges

Part Number D/A29J-SP-PC

Part Number: VibraTite6128oz

Part Number DWTH1316-1428

11/16" X 1/4" Pilots for Counterbore Quantity:1 Part Number: EZ-EZ-A500Product 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