27/64 x 5/32 Pilot Hole HSS Straight Shank Counterbore - Drill America DEWCBR27/64

• 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 counterbore-cutter, and a pilot that is interchangable, which provides flexibility in the use of the tool.

Specifications

• Size: 27/64"
• Overall Length: 4-1/16"
• Material: High Speed Steel
• Finish: Uncoated (Bright)
• Shank Size: 3/8"
• Decimal Equivalent: 0.4219
• Metric Equivalent: 10.71626mm
• Shank Type: Round