Thread prep
Tap Drill Calculator
Search common chart-driven tap drill and clearance values. Metric formula estimates are secondary output only.
Last updated 2026-05-12Confidence: reference-derived18 chart rows
Interactive lookup
Tap drill / clearance search
| Thread | System | Tap drill | Decimal / mm | Clearance normal |
|---|---|---|---|---|
| M6 x 1.0 | METRIC_COARSE | 5 mm | 0.1969 in / 5 mm | 6.6 mm |
Formula estimate for M6 x 1.0: major diameter minus pitch = 5 mm. Use the chart result as primary.
Source note: Common tap drill and clearance chart conventionsConfidence: reference-derivedLast updated: 2026-05-12