11/16" X 3/16" Pilot Hole HSS Straight Shank Counterbore Quantity:1 Part Number D/ACT5

Part Number D/ACT5

Part Number: 50C300ASBSS

Tap Drill Size 1-31/64"

Part Number DWC8MM-4FSE

Part Number: VibraTite146250ml

11/16" X 3/16" Pilot Hole HSS Straight Shank Counterbore Quantity:1 Part Number D/ACT5Product 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