xandz
Plastic
- Joined
- Sep 12, 2012
- Location
- Chicagoland
We're cutting an M4 x .7 metric thread. Print calls for a 6H thread classification. Our normal procedure is to just order a thread gage of the proper classification and check our thread with it. However, we have a 6H gage and a 4H gage and they both have the same size go and no-go pitch diameters stamped on the handle. why would a 4H and 6H have the same limit sizes?