7/8" X 3/16" HSS Aircraft Counterbore 1/4" Shank Quantity:1 Part Number: 43X400DPAPL

Part Number: 43X400DPAPL

Overall Length: 5-7/8"

Part Number: BIT-DWTMHX14X1

Part Number: 75C250SHCSABO/USA

EN 388 RATING:1111A

7/8" X 3/16" HSS Aircraft Counterbore 1/4" Shank Quantity:1 Part Number: 43X400DPAPLProduct 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