13/16" X 1/2" Pilots for Counterbore BoltsandNuts.com Part Number DWCWC1009

Part Number DWCWC1009

Unlike lead or other common fill material

Size m38 x 4

Part Number D/ARSD3/8X15/32

Part Number D/AA/CX127/16

13/16" X 1/2" Pilots for Counterbore BoltsandNuts.com Part Number DWCWC1009Product 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