Mine is 1.690" long with 5x0.8 metric threads. The closest SAE thread would be 10-32.
It fit very well in my 5 mm (0.197") gage hole but would not quite go through the #10 (0.190") hole, and it mic'd at 0.194 in the shank and 0.192 major thread diameter. The 32 tpi gage fit, but poorly, while the 0.8 mm thread gage fit perfectly along the entire length.