11/16" X 5/16" Pilots for Counterbore BoltsandNuts.com 316 Stainless Flat Washers

316 Stainless Flat Washers

Drill Size: 37/64"

Part Number D/ASTCO3/4

also called left hand thread taps are used to make new threads or re-thread damaged and or jammed threads

Part Number: 75C1000WA2G

11/16" X 5/16" Pilots for Counterbore BoltsandNuts.com 316 Stainless Flat WashersProduct 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