3/4" X 1/4" Pilots for Counterbore BoltsandNuts.com Part Number: M16C80SHCS12Z/D

Part Number: M16C80SHCS12Z/D

Part Number: 50C400HCSAL

Size 3/8"-48

Part Number: Assortment Kit #283

Length Under Head: 45MM

3/4" X 1/4" Pilots for Counterbore BoltsandNuts.com Part Number: M16C80SHCS12Z/DProduct 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