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Part Number DWDRSD55/64
Part Number DWDDL12X23/32
Class 8 Split Lock Washers Zinc
Part Number DULSL3NF
Part Number CTH2875
1" X 5/16" Pilot Hole HSS Straight Shank Counterbore Quantity:1 Part Number DWDRSD55/64Product 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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