
Metric thread plug & ring gauges, manufactured in Pune.
Metric thread plug and ring gauges manufactured to DIN ISO 1502. GO and NOT-GO members verify pitch diameter and functional fit across the full metric range.
| Diameter | Pitch | Plug class | Ring class |
|---|---|---|---|
| M1 | 0.25 mm | 5H | 6h |
| M2 | 0.40 mm | 6H | 6g |
| M3 | 0.50 mm | 6H | 6g |
| M4 | 0.70 mm | 6H | 6g |
GO gauge
Enters and passes the complete length of the thread, screwed by hand without excessive force.
NOT-GO gauge
May not enter more than two turns from either end, screwed by hand without excessive force.
Ground on our Matrix thread grinders and verified on TRIMOS H4 before every certificate is issued.