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Cleveland spiral flute tap M8x1 90 mm cobalt black oxide three flutes

Cleveland

Cleveland C98140 Spiral Flute Tap M8x1 90 mm 3 Flutes

SKU CH-GKKE-GT91Q

Metric M8x1 spiral-flute tap cuts internal threads to 6H fit with three cobalt flutes and a 90 mm overall length

  • Product typeTaps
  • Right-hand threading suits standard metric fasteners
  • Three flutes improve chip evacuation in blind holes
  • 35 mm thread length engages full nut depth
  • Cobalt construction with black oxide resists wear
  • 00 mm drill size matches 75 % thread engagement

Cleveland C98140 Spiral Flute Tap M8x1

The Cleveland C98140 is a spiral flute tap designed for cutting M8x1 metric threads. It suits metalworkers and maintenance technicians who need accurate internal threading in through-holes or blind holes. The right-hand thread direction matches standard fastener conventions. Three flutes provide balanced chip evacuation during the cutting process.

Thermals noise and power draw

This hand-operated cutting tool generates no operational noise or heat beyond the friction of metal removal. It draws no electrical power and requires no pneumatic supply to function. The cobalt construction with black oxide finish resists wear during repeated use. Cutting fluid application manages temperature at the cutting interface.

Build quality and daily implications

The 90 mm overall length with 35 mm thread length reaches standard hole depths. A 7.00 mm drill size prepares the correct 75 percent thread engagement for the 6H class of fit. The semi-bottoming design allows threading close to the bottom of blind holes. The black oxide coating adds corrosion resistance and helps retain lubricant on the flutes.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $28.99
Typical for this category: the median of 5,493 items is $27.99.

Specifications

Product
Brand nameCLEVELAND
Product typeTaps

Questions about this item

How do I install the M8x1 spiral flute tap and what step is commonly missed?

Drill a 7.00 mm hole to 75 percent thread depth, then run the 90 mm tap with its 35 mm thread length; the step often missed is using the correct drill size for 6H class fit.

What maintenance or replacement will this cobalt tap need later?

The black oxide coating on the cobalt body wears over time; replace the tap when the three flutes no longer cut clean M8x1 threads at 6H tolerance.

What limit appears first during sustained tapping of M8x1 threads?

The 35 mm thread length restricts how deep you can cut in a single pass; deeper holes require multiple setups or a longer tap.

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