Froneck
Titanium
- Joined
- Dec 4, 2010
- Location
- McClure, PA 17059
A friend of mine purchased a BMW. I'm not sure what the parts do but got a new bracket to mount the strut. The nut supplied will not fit the rod on the strut. In checking the nut it is near 12mm but not 1.75 or 1.25 mm thread. I screwed the nut onto a piece of plastic. Using metric thread gauge it's not 1.5mm either. I used my inch thread gauge and 18TPI (.0555) is perfect. That is dam near 1.4mm (.0551). Gauge pin put in the nut (tap drill size) is .412" snug fit.
I tried threading a rod 15/32-18 with a .412" pilot. 60° threading tool. When I got near the pilot diameter I ran a 60° file in the threads to remove any burrs and kept testing the size with the nut as I took light cuts. I continued until any increase in thread depth reduced the OD. Nut still will not screw on. Any one know what the thread size might be and the thread specs so I can thread this strut rod. Possibly not 60°??
I tried threading a rod 15/32-18 with a .412" pilot. 60° threading tool. When I got near the pilot diameter I ran a 60° file in the threads to remove any burrs and kept testing the size with the nut as I took light cuts. I continued until any increase in thread depth reduced the OD. Nut still will not screw on. Any one know what the thread size might be and the thread specs so I can thread this strut rod. Possibly not 60°??