9/16" X 1/8" HSS Aircraft Counterbore 1/4" Shank Quantity:1 Part Number DWT3/8-16DRAP

Part Number DWT3/8-16DRAP

Part Number DMS70-3060

Part Number DWTSMH26X1

Length Under Head: 80MM

Part Number: 100CNNMB

9/16" X 1/8" HSS Aircraft Counterbore 1/4" Shank Quantity:1 Part Number DWT3/8-16DRAPProduct 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