Check Harbor Freight for a kit called a "Riv-nut" setter. It's a tool similar to a pop riveter, but it permanently installs a threaded sleeve in all the common machine screw sizes. I've used it many times during race car construction where we needed to install a removable panel for access to something like a hidden Nitrous Oxide bottle!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!