1-1/16" X 5/16" Pilot Hole HSS Taper Shank Counterbore Shopify Collective Diameters: #8-32

Diameters: #8-32

Part Number: BIT-KFDRSD3/8X15/32

also called left hand thread taps are used to make new threads or re-thread damaged and or jammed threads

Part Number: M16F120HCS88Z

Length 3-3/4"

1-1/16" X 5/16" Pilot Hole HSS Taper Shank Counterbore Shopify Collective Diameters: #8-32Product 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