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Spiral-Point STI Taps
Available105 products
Spiral-point STI (screw-thread insert) taps have straight flutes with a spiral point that pushes chips in front of the tap as it moves into a hole and out the other side, eventually forcing the chips out of the hole. They are used for creating oversize internal threads in through holes so a helical-coil screw-thread insert can be installed in the hole. The insert distributes the load across the length of the threads and improves the threads' strength when a fastener with a standard screw thread size is installed in the hole.
Thread Limit
Bright-Finish High-Speed Steel Spiral-Point STI Taps
The bright finish on these taps provides a smooth, polished surface. High-speed steel taps provide good wear resistance in general purpose tapping applications in a range of materials.
EGM + Right Hand + 3 Flute
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EGM + Right Hand + 4 Flute
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EGUNF + Right Hand + 3 Flute
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EGUNF + Right Hand + 4 Flute
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Metric + Right Hand + 2 Flute
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Metric + Right Hand + 3 Flute
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Metric Coarse + Right Hand + 2 Flute
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Metric Coarse + Right Hand + 3 Flute
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Metric Coarse + Right Hand + 4 Flute
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UNC + Right Hand + 2 Flute
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UNC + Right Hand + 3 Flute
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UNC + Right Hand + 4 Flute
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UNF + Right Hand + 2 Flute
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UNF + Right Hand + 3 Flute
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UNF + Right Hand + 4 Flute
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TiCN-Coated Powdered-Metal Spiral-Point STI Taps
The TiCN coating on these taps protects them from wear and is harder and more wear-resistant than a TiN coating. These taps are made from powdered metal, which has a uniform microstructure and grain distribution that gives the material a similar strength as carbide. Powdered-metal taps are tougher and less likely to break than cobalt and high-speed steel taps.
Metric + Right Hand + 3 Flute
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Metric Coarse + Right Hand + 2 Flute
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Metric Coarse + Right Hand + 3 Flute
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Metric Coarse + Right Hand + 4 Flute
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UNC + Right Hand + 2 Flute
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UNC + Right Hand + 3 Flute
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UNC + Right Hand + 4 Flute
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UNF + Right Hand + 3 Flute
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UNF + Right Hand + 4 Flute
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Bright Finish Cobalt Spiral-Point STI Taps
The bright finish on these taps provides a smooth, polished surface. Cobalt taps are harder and provide more wear resistance when tapping hard materials at high speeds than high-speed steel taps.
EGUNF + Right Hand + 3 Flute
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UNC + Right Hand + 2 Flute
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UNC + Right Hand + 3 Flute
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UNF + Right Hand + 3 Flute
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TiCN-Coated Cobalt Spiral-Point STI Taps
The TiCN coating on these taps protects them from wear and is harder and more wear-resistant than a TiN coating. Cobalt taps are harder and provide more wear resistance when tapping hard materials at high speeds than high-speed steel taps.
Metric + Right Hand + 3 Flute
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Metric Coarse + Right Hand + 2 Flute
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Metric Coarse + Right Hand + 3 Flute
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Metric Coarse + Right Hand + 4 Flute
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UNC + Right Hand + 2 Flute
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UNC + Right Hand + 3 Flute
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UNF + Right Hand + 3 Flute
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Black-Oxide Powdered Metal Spiral-Point STI Taps
The black-oxide finish on these taps retains lubricants to improve the taps' wear resistance and chip flow. Black-oxide taps should only be used on ferrous metals. These taps are made from powdered metal, which has a uniform microstructure and grain distribution that gives the material a similar strength as carbide. Powdered-metal taps are tougher and less likely to break than cobalt and high-speed steel taps.
Metric + Right Hand + 3 Flute
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Metric Coarse + Right Hand + 2 Flute
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Metric Coarse + Right Hand + 3 Flute
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Metric Coarse + Right Hand + 4 Flute
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UNC + Right Hand + 2 Flute
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UNC + Right Hand + 3 Flute
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UNC + Right Hand + 4 Flute
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UNF + Right Hand + 3 Flute
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UNF + Right Hand + 4 Flute
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Black-Oxide High-Speed Steel Spiral-Point STI Taps
The black-oxide finish on these taps retains lubricants to improve the taps' wear resistance and chip flow. Black-oxide taps should only be used on ferrous metals. High-speed steel taps provide good wear resistance in general purpose tapping applications in a range of materials.
EGUNF + Right Hand + 3 Flute
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Metric Coarse + Right Hand + 2 Flute
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Metric Coarse + Right Hand + 3 Flute
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