1-1/8" X 1/2" Pilots for Counterbore Quantity:1 Part Number: BIT-DWTHSHEX112

Part Number: BIT-DWTHSHEX112

Internal Diameter: 3/8"-16

Size m16 x 1

The 6135 chromium-vanadium steel core is press-fit deeply into the handle and won't pull apart

Part Number: 62C350SHCSSS

1-1/8" X 1/2" Pilots for Counterbore Quantity:1 Part Number: BIT-DWTHSHEX112Product 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