1-5/8" X 7/16" Pilot Hole HSS Straight Shank Counterbore Quantity:1 Part Number: BIT-T/A54931

Part Number: BIT-T/A54931

Part Number: BIT-DULSD5

Size 2-3/8"

Part Number: 62F275HCSSS/316

or compromises • Secure Hold for Reduced Twisting – The combination of the outward angled tips and the flat surface at the base of the tips creates a very secure hold on the ring

1-5/8" X 7/16" Pilot Hole HSS Straight Shank Counterbore Quantity:1 Part Number: BIT-T/A54931Product 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