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Straight Flute Taps

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STI Tap Style 1

Plug Style - (4 Thread Chamfer)

Used in thru holes and blind holes that allow for ample chip clearance. Easier to start and require less tapping torque than bottoming taps.
STI Tap Style 1

Bottoming Style - (2 Thread Chamfer)

Used in blind holes drilled to a minimum depth that requires threads be close to the bottom of the hole.