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STI Tap: M16-1
EN 388 RATING:3333
Part Number DWDCO1-7/16
Part Number DEWSFC1/2-60
Part Number T/A54816
3/4" X 3/16" HSS Aircraft Counterbore 1/4" Shank Shopify Collective STI Tap: M16-1Product 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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