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 #: 35L7H1-1YV0V-C33N
M33 x 2 STI Plug Tap - High Speed SteelSpecial Price $320.30 Regular Price $506.80 -
Sku #: 35L7H1-1YV0V-C30R
M30 x 3.5 STI Plug Tap - High Speed SteelSpecial Price $274.89 Regular Price $413.25 -
Sku #: 35L7H1-1YV0V-C30Q
M30 x 3 STI Plug Tap - High Speed SteelSpecial Price $276.14 Regular Price $415.13 -
Sku #: 35L7H1-1YV0V-C30N
M30 x 2 STI Plug Tap - High Speed SteelSpecial Price $274.89 Regular Price $413.25 -
Sku #: 35L7H1-1YV0V-C30J
M30 x 1.5 STI Plug Tap - High Speed SteelSpecial Price $274.89 Regular Price $413.25 -
Sku #: 35L7H1-1YV0V-C28J
M28 x 1.5 STI Plug Tap - High Speed SteelSpecial Price $274.49 Regular Price $412.65 -
Sku #: 35L7H1-1YV0V-C27Q
M27 x 3 STI Plug Tap - High Speed SteelSpecial Price $254.66 Regular Price $382.83 -
Sku #: 35L7H1-1YV0V-C27N
M27 x 2 STI Plug Tap - High Speed SteelSpecial Price $254.66 Regular Price $382.83 -
Sku #: 35L7H1-1YV0V-C27J
M27 x 1.5 STI Plug Tap - High Speed SteelSpecial Price $254.66 Regular Price $382.83 -
Sku #: 35L7H1-1YV0V-C26J
M26 x 1.5 STI Plug Tap - High Speed SteelSpecial Price $231.19 Regular Price $347.55 -
Sku #: 35L7H1-21Z0V-C24Q
M24 x 3 Left-Hand STI Plug Tap - High Speed SteelSpecial Price $286.04 Regular Price $430.00 -
Sku #: 35L7H1-1YV0V-C24Q
M24 x 3 STI Plug Tap - High Speed SteelSpecial Price $171.49 Regular Price $257.80 -
Sku #: 35L7H1-21Z0V-C24N
M24 x 2 Left-Hand STI Plug Tap - High Speed SteelSpecial Price $286.04 Regular Price $430.00 -
Sku #: 35L7H1-1YV0V-C24N
M24 x 2 STI Plug Tap - High Speed SteelSpecial Price $171.69 Regular Price $244.50 -
Sku #: 35L7H1-1YV0V-C24J
M24 x 1.5 STI Plug Tap - High Speed SteelSpecial Price $171.69 Regular Price $244.50 -
Sku #: 35L7H1-1YV0V-C22P
M22 x 2.5 STI Plug Tap - High Speed SteelSpecial Price $144.83 Regular Price $206.25 -
Sku #: 35L7H1-1YV0V-C22N
M22 x 2 STI Plug Tap - High Speed SteelSpecial Price $136.77 Regular Price $194.78 -
Sku #: 35L7H1-21Z0V-C22J
M22 x 1.5 Left-Hand STI Plug Tap - High Speed SteelSpecial Price $201.22 Regular Price $302.50 -
Sku #: 35L7H1-1YV0V-C22J
M22 x 1.5 STI Plug Tap - High Speed SteelSpecial Price $136.77 Regular Price $194.78 -
Sku #: 35L7H1-21Z0V-C20P
M20 x 2.5 Left-Hand STI Plug Tap - High Speed SteelSpecial Price $172.95 Regular Price $260.00 -
Sku #: 35L7H1-1YV0V-C20P
M20 x 2.5 STI Plug Tap - High Speed SteelSpecial Price $119.50 Regular Price $170.18 -
Sku #: 35L7H1-1YV0V-C20N
M20 x 2 STI Plug Tap - High Speed SteelSpecial Price $122.11 Regular Price $173.90 -
Sku #: 35L7H1-21Z0V-C20J
M20 x 1.5 Left-Hand STI Plug Tap - High Speed SteelSpecial Price $172.95 Regular Price $260.00 -
Sku #: 35L7H1-1YV0V-C20J
M20 x 1.5 STI Plug Tap - High Speed SteelSpecial Price $122.11 Regular Price $173.90 -
Sku #: 35L7H1-21Z0V-C18P
M18 x 2.5 Left-Hand STI Plug Tap - High Speed SteelSpecial Price $165.02 Regular Price $235.00 -
Sku #: 35L7H1-1YV0V-C18P
M18 x 2.5 STI Plug Tap - High Speed SteelSpecial Price $92.08 Regular Price $131.13 -
Sku #: 35L7H1-1YV0V-C18N
M18 x 2 STI Plug Tap - High Speed SteelSpecial Price $99.96 Regular Price $142.35 -
Sku #: 35L7H1-21Z0V-C18J
M18 x 1.5 Left-Hand STI Plug Tap - High Speed SteelSpecial Price $165.02 Regular Price $235.00 -
Sku #: 35L7H1-1YV0V-C18J
M18 x 1.5 STI Plug Tap - High Speed SteelSpecial Price $104.70 Regular Price $149.10