Mitutoyo micrometer heads in 0-25 mm and 0-50 mm ranges. The range has 5 digital or Digimatic heads and 1 mechanical head. Genuine Japanese-market stock. Ships from Japan with tracking. Import duties are included for US buyers; buyers outside the US pay their own duties and taxes.
Mitutoyo Micrometer Heads guide: models and how to choose
Which Mitutoyo micrometer head should you buy?
Micrometer heads are the measuring spindle of a micrometer, sold without the frame, so you can build them into your own fixture or stage. Compare the range, the display step, the stem and the tip. The table lists all 6 models. Every value comes from the specification table on each product page.
| Model | Range | Minimum display | Overall length | Stem | Tip | Data output terminal | Battery | Weight |
|---|---|---|---|---|---|---|---|---|
| MHN1-25MX (350-251-30) | 0-25 mm | 0.001 mm | 156.5 mm | Straight | Flat | Included | SR44 x 1 (included) | 230 g |
| MHN2-25MX (350-252-30) | 0-25 mm | 0.001 mm | 156.5 mm | With nut | Flat | Included | SR44 x 1 (included) | 230 g |
| MHN3-25MX (350-253-30) | 0-25 mm | 0.001 mm | 156.5 mm | Straight | Spherical | Included | SR44 x 1 (included) | 230 g |
| MHN4-25MX (350-254-30) | 0-25 mm | 0.001 mm | 156.5 mm | With nut | Spherical | Included | SR44 x 1 (included) | 230 g |
| MHD-50MB (164-163) | 0-50 mm | 0.001 mm | 220 mm | Straight | Flat | Included | SR44 x 1 (included) | 490 g |
| MHN1-25K2 (250-301) | 0-25 mm | 0.01 mm | 135.8 mm | Straight | Flat | Not confirmed | Not confirmed | 165 g |
All 6 models list Japan as the country of origin. "Not confirmed" means the product page does not state the value, so we do not claim it. The MHN1-25K2 page lists no data output terminal and no battery, so check with us before you order if you need either.
How to choose
- Range: five models cover 0-25 mm. The MHD-50MB covers 0-50 mm and is longer (220 mm) and heavier (490 g).
- Display step: five models list 0.001 mm. The MHN1-25K2 lists 0.01 mm.
- Stem: the MHN1 and MHN3 list a straight stem. The MHN2 and MHN4 list a stem with a nut. Their other listed values are the same, so pick the stem that matches how you will mount the head.
- Tip: the MHN1, MHN2, MHD-50MB and MHN1-25K2 list a flat tip. The MHN3 and MHN4 list a spherical tip.
- Data output: the five models with a 0.001 mm display each list a data output terminal. Which cables or receivers fit is Not confirmed on these pages.
Looking for a complete micrometer instead of a head? See Mitutoyo micrometers, inside and bore micrometers and depth gauges and depth micrometers. For other measuring tools, browse height gauges and measurement data and wireless systems. Not sure which tool you need? Read which Mitutoyo tool measures what you're working on. Browse everything from the brand on the Mitutoyo page.