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preventing fastener round-off
Part Number: EZ-EZ-329-428
Flute Length 5-1/8"
Part Number: 75C200NCPLSS/316
Part Number DWTHX1220LH
2-1/8" X 1/2" Pilot Hole HSS Taper Shank Counterbore BoltsandNuts.com preventing fastener round-offProduct 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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