WIRE STI TAPS

Spiral Points HELI-COIL spiral point taps have been designed primarily for the machine tapping of through holes. A spiral point is ground into the lead threads at an angle to the tap axis. This produces a tap with initial left hand flutes having a progressive cutting rake towards the point of the tap. The swarf

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WIRE STI TAPS

Product Overview

HELI-COIL Wire STI Taps include specialized tap variants designed for precision threading applications. The available variants consist of Spiral Point Taps and Spiral Flute Taps, each engineered for specific hole types and chip evacuation requirements.

Key Features & Capabilities

Spiral Point Taps

Design & Application: Designed primarily for machine tapping of through holes.
Geometry: Features a spiral point ground into the lead threads at an angle to the tap axis, producing initial left-hand flutes with a progressive cutting rake towards the point.
Performance: Swarf (chips) is pushed ahead of the tap and falls free as it emerges through the hole, eliminating hazards caused by chip accumulation in flutes.
Efficiency: Suited for tapping precise deep holes in a single pass at very high peripheral speeds due to improved cutting action.

Spiral Flute Taps

Design & Application: Appropriate for machining blind holes, particularly in materials that produce a continuous chip.
Geometry: Features helical flutes ground in the same direction as the thread to direct swarf back out of the hole.
Chamfer Lead: Manufactured with a bottoming chamfer lead specifically designed for tapping blind holes.