If you are asking where to buy the screws, look at mcmaster carr.
If you are asking do i recommend using them, I'd say no. Stereos aren't a very hot item for theft these days. I suppose a cb radio isn't either. I live in so cal. Over here they take the whole car or they break in for things that are sitting on the seat etc. . Stuff like a purse, wallet, back pack, cell phones, laptops, etc.
Easy pickings. If it's less than $950 in value it's almost always a misdemeanor. In LA County a 180 day sentence is a book and release at county jail..... Meaning in one door, photograph, fingerprints, paperwork and leave out a different door...... Then go commit more crime.
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