59/64" X 1/4" Pilot Hole HSS Straight Shank Counterbore Quantity:1 Inch & Metric

Inch & Metric

Part Number DWDRSD25

Part Number: EZ-EZ-450-5

Size 4-1/16"

The square bit tapers slightly towards the tip for easy insertion and strong engagement with fastener heads

59/64" X 1/4" Pilot Hole HSS Straight Shank Counterbore Quantity:1 Inch & MetricProduct 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