Correct bolt for rear engine mount

[rocketman4321]

Was under the car for other reasons, and I noticed the bolt that goes through the rear left lower engine mount into the transaxle was missing. This mount is the one off the rear left fluid mount, with the bracket that sort of arcs over the drive axle. The bolt runs to the left through the bracket just above and in front of the axle. It appears to be a 10M x ?, but I don't have any that'll reach deep enough to get the rest of the spec.
Thanks!