ISO Metric Fine Thread, pitch 0.5 · DIN 13-3
M12 × 0.5 Thread: Pitch, Tap Drill & Dimensions
M12 × 0.5 is an ISO metric fine thread with a 0.5 mm pitch. The tap drill is 11.5 mm, and the internal minor diameter D1 is 11.459 mm.
| Nominal (major) diameter | 12 mm |
|---|---|
| Pitch | 0.5 mm (fine) |
| Tap drill (D − P) | 11.5 mm |
| Pitch diameter d2 / D2 | 11.675 mm |
| Minor diameter, external d3 | 11.387 mm |
| Minor diameter, internal D1 | 11.459 mm |
| Thread depth, external h3 | 0.307 mm |
| Flank angle | 60° |
| Clearance hole (fine / medium / coarse) | 13 / 13.5 / 14.5 mm |
Common questions
What size drill do I use to tap M12 × 0.5?
Use a 11.5 mm drill. This is the standard tap drill for M12 × 0.5; for hard materials or deep threads a slightly larger drill reduces tapping torque.
What is the pitch of M12 × 0.5?
The pitch of M12 × 0.5 is 0.5 mm (fine), meaning the thread advances that distance in one full turn.
Where can I find other ISO Metric Fine Thread, pitch 0.5 sizes?
The full ISO Metric Fine Thread, pitch 0.5 table, with every size and a live filter, is on its standard page, and the Thread Finder searches all 73 standards at once.
Reference values; computed values use the ISO basic profile. Verify against the current standard before production use.