1-1/2" X 3/8" Pilot Hole HSS Straight Shank Counterbore Quantity:1 Part Number: 75F450HCSSS

Part Number: 75F450HCSSS

Part Number DIC04927

Part Number T/A57048TN

Part Number: M16C40BFL12PL

A2-70 Stainless Hex Head Cap Screws DIN 931 / 933

1-1/2" X 3/8" Pilot Hole HSS Straight Shank Counterbore Quantity:1 Part Number: 75F450HCSSSProduct 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