1-3/16" X 1/2" Pilots for Counterbore Quantity:1 Length Under Head: 2-1/4"

Length Under Head: 2-1/4"

Optional Locking Chemical Cabinet

Part Number DWTMR1-4X

Part Number DMOD9

Length 2-7/16"

1-3/16" X 1/2" Pilots for Counterbore Quantity:1 Length Under Head: 2-1/4"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