A trick from the 'old days', Linseed oil.
Linseed oil will with time become sticky and act as a thread locking compound,
If it was me I might say away from Locotite type products, the torque required to remove the fastener may be greater than the strength of the internal parts. Loctite idea of small is anything less than two inches in diameter. Larger than most camera screws.
Fingernail polish is perhaps the easiest of what you may have around the house.
And if you do not have fingernail polish go out tonight and introduce yourself to the suitable young lady and ask for her help, who know where that could go for you.