2-1/2" X 1/2" Pilot Hole HSS Straight Shank Counterbore Quantity:1 Grade 8 Serrated Hex Flange

Grade 8 Serrated Hex Flange Nuts Zinc Yellow

Part Number: BIT-DMS04-1043

Part Number: 62C350BCGSS/316

nonslip grips provide comfortable fingertip control • Custom-engineered steel alloy is heat treated to HRC 44-48

2-1/2" X 1/2" Pilot Hole HSS Straight Shank Counterbore Quantity:1 Grade 8 Serrated Hex FlangeProduct 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