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Threaded Insert Taps
Screw thread insert taps (STI taps) operate in the same manner as “standard” taps, but produce an oversized thread specifically for threaded inserts. During insert installation, the threads cut by an STI tap form the insert into the desired thread size. STI taps are ideal for tapping holes in softer metals that require a strong threaded insert. STI taps are manufactured from high speed steel (HSS) for superior durability. We offer STI taps in a wide range of inch, metric, and spark plug sizes to meet your unique requirements.
Available In:
- Inch sizes from #2 to 3-1/2
- Metric sizes from M2.2 to M64
- Manufactured from high speed steel (HSS)
- Straight flute
- 4-thread lead
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Sku #: 35L7H1-1Z50V-C20N
M20 x 2 STI Bottoming Tap - High Speed SteelSpecial Price $122.11 Regular Price $173.90 -
Sku #: 35L7H1-1Z50V-C20J
M20 x 1.5 STI Bottoming Tap - High Speed SteelSpecial Price $122.11 Regular Price $173.90 -
Sku #: 35L7H1-1Z50V-C18P
M18 x 2.5 STI Bottoming Tap - High Speed SteelSpecial Price $92.08 Regular Price $131.13 -
Sku #: 35L7H1-1Z50V-C18N
M18 x 2 STI Bottoming Tap - High Speed SteelSpecial Price $99.96 Regular Price $142.35 -
Sku #: 35L7H1-1Z50V-C18J
M18 x 1.5 STI Bottoming Tap - High Speed SteelSpecial Price $99.96 Regular Price $142.35 -
Sku #: 35L7H1-1Z50V-C16N
M16 x 2 STI Bottoming Tap - High Speed SteelSpecial Price $82.18 Regular Price $117.03 -
Sku #: 35L7H1-1Z50V-C16J
M16 x 1.5 STI Bottoming Tap - High Speed SteelSpecial Price $84.21 Regular Price $119.93 -
Sku #: 35L7H1-1Z50V-C14N
M14 x 2 STI Bottoming Tap - High Speed SteelSpecial Price $61.65 Regular Price $87.80 -
Sku #: 35L7H1-1Z50V-C14J
M14 x 1.5 STI Bottoming Tap - High Speed SteelSpecial Price $62.97 Regular Price $89.68 -
Sku #: 35L7H1-1Z50V-C12M
M12 x 1.75 STI Bottoming Tap - High Speed SteelSpecial Price $39.34 Regular Price $56.03 -
Sku #: 35L7H1-1Z50V-C12J
M12 x 1.5 STI Bottoming Tap - High Speed SteelSpecial Price $47.77 Regular Price $68.03 -
Sku #: 35L7H1-1Z50V-C12H
M12 x 1.25 STI Bottoming Tap - High Speed SteelSpecial Price $47.77 Regular Price $68.03 -
Sku #: 35L7H1-1Z50V-C11J
M11 x 1.5 STI Bottoming Tap - High Speed SteelSpecial Price $46.70 Regular Price $66.50 -
Sku #: 35L7H1-1Z50V-C11H
M11 x 1.25 STI Bottoming Tap - High Speed SteelSpecial Price $48.75 Regular Price $69.43 -
Sku #: 35L7H1-1Z50V-C11F
M11 x 1 STI Bottoming Tap - High Speed SteelSpecial Price $48.75 Regular Price $69.43 -
Sku #: 35L7H1-1Z50V-C10J
M10 x 1.5 STI Bottoming Tap - High Speed SteelSpecial Price $33.57 Regular Price $47.80 -
Sku #: 35L7H1-1Z50V-C10H
M10 x 1.25 STI Bottoming Tap - High Speed SteelSpecial Price $34.97 Regular Price $49.80 -
Sku #: 35L7H1-1Z50V-C10F
M10 x 1 STI Bottoming Tap - High Speed SteelSpecial Price $34.97 Regular Price $49.80 -
Sku #: 35L7H1-1Z50V-B90H
M9 x 1.25 STI Bottoming Tap - High Speed SteelSpecial Price $39.34 Regular Price $56.03 -
Sku #: 35L7H1-1Z50V-B60F
M6 x 1 STI Bottoming Tap - High Speed SteelSpecial Price $21.28 Regular Price $30.30 -
Sku #: 35L7H1-1Z50V-B50E
M5 x 0.8 STI Bottoming Tap - High Speed SteelSpecial Price $21.24 Regular Price $30.25 -
Sku #: 35L7H1-1Z50V-B40C
M4 x 0.7 STI Bottoming Tap - High Speed SteelSpecial Price $21.24 Regular Price $30.25 -
Sku #: 35L7H1-1Z50V-B35B
M3.5 x 0.6 STI Bottoming Tap - High Speed SteelSpecial Price $21.98 Regular Price $31.30 -
Sku #: 35L7H1-1Z50V-B30A
M3 x 0.5 STI Bottoming Tap - High Speed SteelSpecial Price $18.75 Regular Price $26.70 -
Sku #: 35L7H1-1Z50V-B259
M2.5 x 0.45 STI Bottoming Tap - High Speed SteelSpecial Price $27.28 Regular Price $38.85 -
Sku #: 35L7H1-1Z50V-B229
M2.2 x 0.45 STI Bottoming Tap - High Speed SteelSpecial Price $27.28 Regular Price $38.85 -
Sku #: 35L7H1-1Z50V-B208
M2 x 0.4 STI Bottoming Tap - High Speed SteelSpecial Price $30.28 Regular Price $43.13 -
Sku #: 35L7H1-1Z50V-C14H
M14 x 1.25 STI Bottoming Tap - High Speed SteelSpecial Price $62.97 Regular Price $89.68 -
Sku #: 35L7H1-1Z50V-C12F
M12 x 1 STI Bottoming Tap - High Speed SteelSpecial Price $47.77 Regular Price $68.03 -
Sku #: 35L7H1-1Z50C-150
1-1/2-12 STI Bottoming Tap - High Speed SteelSpecial Price $325.97 Regular Price $515.78