13/16" X 1/2" Pilots for Counterbore BoltsandNuts.com Size m38 x 4

Size m38 x 4

Part Number DWCWC1009

Tap Size 1"-12

Two "wings" on the base of each shank help resist twisting or being pulled out of the handle

Unlike lead or other common fill material

13/16" X 1/2" Pilots for Counterbore BoltsandNuts.com Size m38 x 4Product 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