1-11/16" X 7/16" Pilot Hole HSS Taper Shank Counterbore Shopify Collective Part Number: 75X300DPPOAPL

Part Number: 75X300DPPOAPL

All items work with through-hole

Part Number DWT91612

Part Number: M6C12ASBA2

1-11/16" X 7/16" Pilot Hole HSS Taper Shank Counterbore Shopify Collective Part Number: 75X300DPPOAPLProduct 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