5/8" X 1/2" Pilots for Counterbore BoltsandNuts.com Part Number MMO7/64-4FDE-ST-BN
Description
Part Number MMO7/64-4FDE-ST-BN
Drill Size: 17/32"
Part Number: DUR013-95
Flute Length: 3"
Size 5/16"-72
5/8" X 1/2" Pilots for Counterbore BoltsandNuts.com Part Number MMO7/64-4FDE-ST-BNProduct 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
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