7/16" X 5/32" Pilot Hole HSS Straight Shank Counterbore BoltsandNuts.com Part Number: M16F130HCS88Z

Part Number: M16F130HCS88Z

Tap Drill Size 27/32"

from a long

Part Number KFD3F25/32

the underside of the lid has a grid pattern that makes contact with the dividers

7/16" X 5/32" Pilot Hole HSS Straight Shank Counterbore BoltsandNuts.com Part Number: M16F130HCS88ZProduct 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