13/16" X 5/16" Pilots for Counterbore Quantity:1 Industry Type: Automotive & Garage

Industry Type: Automotive & Garage

Part Number: M16C120SHCS12Z/D

offering a complete range of security hex

Part Number D/A4025-CO-PC

Part Number D/ASTCO13/32

13/16" X 5/16" Pilots for Counterbore Quantity:1 Industry Type: Automotive & GarageProduct 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