DN-TAP-M8X1.25
The Daily Driver — M8×1.25 Tap
The size you reach for without looking.
- 8 mm diameter, 1.25 mm pitch
- ISO coarse pitch — a bolt marked plain M8 is this thread
- High speed steel, M2 grade — 65 HRC hardened
- Holds its cutting edge to about 600 °C; plain carbon steel softens from 200 °C
- Titanium nitride coated — about 2,300 HV, three times the hardness of the steel beneath
- Coating 2–5 microns thick
- Tap drill 6.75 mm (75% thread)