1/4" X 3/32" HSS Aircraft Counterbore 1/4" Shank BoltsandNuts.com The straight-flute design is recommended

The straight-flute design is recommended for most general purpose reaming

Part Number: 2502-186-5295

STI Tap: M16-2

Part Number: M16X35DPAPL

Size 5/8"-11

1/4" X 3/32" HSS Aircraft Counterbore 1/4" Shank BoltsandNuts.com The straight-flute design is recommendedProduct 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