Threads / Size reference
M39x3 Metric fine
M39x3 has a nominal outside diameter of 39 mm and a 3 mm pitch.
1.535433 in
8.466667 TPI · calculated
Nominal dimensions; no class allowances or acceptance limits applied. M sizes state diameter and pitch in millimetres.
nearby diameter comparison
M39x3 vs M36x3
There is no second pitch at this diameter in the directory. Compare the nearby M36x3 Metric fine: its nominal diameter differs by 3 mm. It is not a replacement.
Swipe to compare both sizes →
| Property | M39x3 Metric fine | M36x3 Metric fine |
|---|---|---|
| Nominal diameter · inDifferent | 1.535433 | 1.417323 |
| Nominal diameter · mmDifferent | 39 | 36 |
| Threads per inch | 8.466667 | 8.466667 |
| Pitch · mm | 3 | 3 |
Tapping-hole evidence for M39x3
No reviewed chart row for M39x3 Metric fine
You can calculate a theoretical hole with the cited equation. It is not a stocked-drill selection or a tool-specific hole range.
Need acceptance limits?
The complete class and applicable drawing requirements are needed. These nominal values are not maximum/minimum inspection limits.
Part has no marking?
Measure the correct diameter and pitch, then compare candidates across metric and inch systems.
Basis for this size
Nominal designation and family transcribed from the live directory on 2026-10-19; unit conversions are calculated using exactly 25.4 mm/in. No matching drill row has been reviewed for this exact size. Paid standard limit tables have not been reviewed.
ISO 261 · metric general plan ↗ · Guhring · Tap Drill Sizes ↗ Full source scope →