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5/16" X 3/32" Pilot Hole HSS Straight Shank Counterbore - High Performance & Durable Cutting Tool | Drill AmericaCounterboring 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

These cutters are essential for applications requiring strong and interlocking joints in various construction and manufacturing projects

Why Choose Drill America - 15/16-30 UNS HSS Bottoming Tap

offering the power and stability required for high-amp welding tasks

Size: 3-3/8"

Drill America - 11/16 -1-3/32 60 degree Pilotless Countersink

Get the Drill America - 13/16-18 UNS HSS Tap Set and experience the perfect combination of performance and protection for your professional needs

Choose the Drill America - 5/16-48 UNS HSS Tap Set for unmatched reliability and performance

Drill America - 5/16-25/32 90 degree Deburring Tool

Enhance your safety and performance with the Drill America - 3/8-18 NPT HSS 4 Flute Pipe Tap Left Hand

and metalworkers who prioritize safety

Thread Size: 7/32"

Choose the Drill America - 4 x 3/4 x 1-1/4 45 degree Right Hand Single Angle Cutter for unmatched reliability and performance