43/64" X 3/16" Pilot Hole HSS Straight Shank Counterbore BoltsandNuts.com Part Number T/A54027

Part Number T/A54027

stamped markings are permanently impressed into the material by a roll-stamp die and are as large as possible while still being readable along the socket's curved surface

Part Number: Assortment Kit #145378 Pieces - Fine Thread

Carry combination wrenches anywhere with the compact roll-up pouch that keeps your wrenches well-packed and unable to slide out

43/64" X 3/16" Pilot Hole HSS Straight Shank Counterbore BoltsandNuts.com Part Number T/A54027Product 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