Threads / Size reference
M56x5.5 Metric coarse
M56x5.5 has a nominal outside diameter of 56 mm and a 5.5 mm pitch.
2.204724 in
4.618182 TPI · calculated
Nominal dimensions; no class allowances or acceptance limits applied. M sizes state diameter and pitch in millimetres.
nearby diameter comparison
M56x5.5 vs M48x5
There is no second pitch at this diameter in the directory. Compare the nearby M48x5 Metric coarse: its nominal diameter differs by 8 mm. It is not a replacement.
Swipe to compare both sizes →
| Property | M56x5.5 Metric coarse | M48x5 Metric coarse |
|---|---|---|
| Nominal diameter · inDifferent | 2.204724 | 1.889764 |
| Nominal diameter · mmDifferent | 56 | 48 |
| Threads per inchDifferent | 4.618182 | 5.08 |
| Pitch · mmDifferent | 5.5 | 5 |
Tapping-hole evidence for M56x5.5
No reviewed chart row for M56x5.5 Metric coarse
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 →