https://www.ifixit.com/Guide/Nikon+D90+Tripod+Thread+Plate+Replacement/32729
Nikon D90 Tripod Thread Plate Replacement - iFixit Repair Guide
The tripod threads of the Nikon D90 can sometimes become striped or damaged. This guide shows how to replace the tripod thread plate in the bottom...
nikon d90repair guidetripodthreadplate