1-1/8" X 5/16" Pilots for Counterbore Quantity:1 Part Number: BIT-DMS04-1076

Part Number: BIT-DMS04-1076

Part Number DWTHX789

Part Number POUM22X1

Part Number D/A60J-P-SET

Part Number DMS04-1035

1-1/8" X 5/16" Pilots for Counterbore Quantity:1 Part Number: BIT-DMS04-1076Product 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