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Spiral Flute Tap SP (N-SP)

Spiral Flute Tap SP (N-SP)

The spiral flute tap is ideal for machining blind holes as cutting chip is discharged from the grooves twisted in the same direction as the threads.
・ The grooves are twisted in the same direction as the threads for not only good scrap discharging performance but also great cutting performance.
・ Intermittent cutting of female threads with keyway is also possible.
・ Capable of machining both synchronously and asynchronously.
・ Ideal for machining blind holds as the groove is twisted, continuous small coiled scraps are discharged to the rear, and it does not cause cutting chip clogging.
・ Ideal for tapping especially sticky work materials, plastics, etc. due to its sharpness.
・ The tap can easily cut.
・ Intermittent cutting of pilot holes with keyway is also possible.
・ Since the blade strength is inferior to HT, the HT shape is more suitable for hard materials.
・ Ideal for machining blind holes.


  • Product shape may differ from the photo. Confirm the shape and external dimensions with the shape symbol.
  • Some products are scheduled to be discontinued from October 2021. Depend on stock status, the end time will be changed. Please check the quotation and order screen for details.


Japanese Only

Part Number

Configured Part Number is shown.

Part Number
Part NumberMinimum order quantityVolume DiscountDays to ShipScrew Types Nominal Pitch, Number of Threading
Overall Length (L)
Class Thread Length
Length under neck
Shank diameter (Ds)
Shank square width (K)
Shank square part length
Number of Grooves Shape Torsional Angle
1 Piece(s) 9 Day(s) or more MeterM364155P452-28212447-
1 Piece(s) 9 Day(s) or more Whitworth1 1/47145P446-24192247-
1 Piece(s) 9 Day(s) or more Sewing Machine9/644052P111175473c40°
1 Piece(s) 9 Day(s) or more unifiedNo.44046P191443.262c40°
1 Piece(s) Same day MeterM101.2575P223-75.583e40°
1 Piece(s) 9 Day(s) or more MeterM121.2582P226-8.56.593e40°
1 Piece(s) Same day MeterM121.7582P226-8.56.593e40°
1 Piece(s) 9 Day(s) or more MeterM16295P226-12.510133e40°
1 Piece(s) Same day MeterM40.752P211175473c40°
1 Piece(s) 9 Day(s) or more MeterM50.860P213225.54.573c40°
1 Piece(s) Same day MeterM6162P2152664.573c40°
1 Piece(s) 9 Day(s) or more MeterM7170P219-6.2583e40°
1 Piece(s) Same day MeterM81.2570P219-6.2583e40°
1 Piece(s) 9 Day(s) or more MeterM91.2575P223-75.583e40°
1 Piece(s) 9 Day(s) or more unified5/161870P219-6.2583e40°
1 Piece(s) 9 Day(s) or more MeterM121.2582P326-8.56.593e40°
1 Piece(s) 9 Day(s) or more MeterM182100P333-1411144e40°
1 Piece(s) 9 Day(s) or more MeterM221.5115P333-1713164e40°
1 Piece(s) 9 Day(s) or more MeterM222115P333-1713164e40°
1 Piece(s) 9 Day(s) or more MeterM222.5115P333-1713164e40°
1 Piece(s) 9 Day(s) or more MeterM251.5125P339-1915184e40°
1 Piece(s) 9 Day(s) or more MeterM273130P339-2015184e40°
1 Piece(s) 9 Day(s) or more unified7/161482P326-8.56.593e40°
1 Piece(s) 9 Day(s) or more unified3/416105P332-1512154e40°
1 Piece(s) 9 Day(s) or more Whitworth1/21288P326-10.58113e40°
1 Piece(s) 9 Day(s) or more Whitworth7/89115P333-1713164e40°
1 Piece(s) 9 Day(s) or more MeterM121.2582P426-8.56.593e40°


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Basic Information

Chamfer threads 2.5P Tool Material Type High-speed steel work material Low-Carbon Steel (carbon alloy less than 0.25%) / Medium carbon steel (carbon content 0.25 to 0.45%) / High Carbon Steel (C with a content over 0.45%) / Quenched and tempered steel (25 to 35 HRC) / Steel casting (SC) / Brass (Bs) / Brass cast iron (BsC) / Bronze (Pb) / Aluminum Rolled Material (AL) / Aluminum Alloy Casting (AC, ADC) / Magnesium Alloy (MC) / Zinc Alloy Casting (ZDC)
Tap Type Spiral Tap Hole type For blind hole Coating Y/N NA

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