Lost a Screw repairing; where to buy new one?

I lost one of the 3.8mm screws while repairing my headphone jack today. Is there a good substitute it as a replacement that won't cause internal damage to the phone if it was installed?

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0

crwdns2947414:01crwdne2947414:0:

Any screw of similar size & length from A donor phone that you might have laying around should do the job… if I had a way to give you one I would because I have tons of extra screws and I happen to have S10 plus donor phone to take the screw from!

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

crwdns2934285:0crwdne2934285:0