Trapezoidal Thread (Tr), Standard Pitch · DIN 103 / ISO 2904
Tr 20 x 4 Thread: Pitch, Tap Drill & Dimensions
Tr 20 x 4 is a Trapezoidal Thread (Tr), Standard Pitch (DIN 103 / ISO 2904) size, a pitch of 4 mm. The tap drill is 16.000 mm.
| Bolt Minor Diameter (mm) | 15.500 |
|---|---|
| Nut Minor Diameter (mm) | 16.000 |
| Threads per inch (TPI) | 6.35 |
| Flank angle | 30° |
Common questions
Where can I find other Trapezoidal Thread (Tr), Standard Pitch sizes?
The full Trapezoidal Thread (Tr), Standard Pitch 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.