1-5/8" X 7/16" Pilot Hole HSS Taper Shank Counterbore Quantity:1 Width: 10-13/16"

Width: 10-13/16"

Size 3/8"-5/32"

Three square files are triangular in cross section

Part Number: 75F225HCSSS/316

Part Number: Assortment Kit #401

1-5/8" X 7/16" Pilot Hole HSS Taper Shank Counterbore Quantity:1 Width: 10-13/16"Product 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