3/8" X 5/32" Pilot Hole HSS Straight Shank Counterbore BoltsandNuts.com Square dies are threading tools

Square dies are threading tools used to create external threads on square-shaped rods and shafts

Shape: Ball-End Double Cut

Part Number: 37C300HCSAL

Part Number DWTSMR112-14X

Part Number: M25X100DPPOAPL

3/8" X 5/32" Pilot Hole HSS Straight Shank Counterbore BoltsandNuts.com Square dies are threading toolsProduct 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