47/64" X 1/4" Pilot Hole HSS Straight Shank Counterbore Quantity:1 Diameter: 3/8"-24

Diameter: 3/8"-24

Length:1-1/2"

A2-70 Stainless Finished Hex Nuts

The teeth are hardened to 45–50 HRC and should not chip or strip even on fasteners up to Grade 8 or Class 12

47/64" X 1/4" Pilot Hole HSS Straight Shank Counterbore Quantity:1 Diameter: 3/8"-24Product 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