9/16" X 3/16" Pilot Hole HSS Straight Shank Counterbore BoltsandNuts.com Stubby Driver Handle with 1/4

Stubby Driver Handle with 1/4 Inch Nut Driver Bit Tube and 1-pc

Class 10 Flat Washers Zinc

and the internal six-lobe geometry of the E-Star sockets are designed for a high-torque fit that resists slipping • Optimal Two-Piece Design – We use separate steel alloys and processes for the bit and socket

Part Number: BIT-T/A54661

Part Number: 87F500HCSSS

9/16" X 3/16" Pilot Hole HSS Straight Shank Counterbore BoltsandNuts.com Stubby Driver Handle with 1/4Product 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