[RBS] ISO: hardware store that sells hard-to-replace screw

Listers,

I need to replace a metal screw that is non-standard in size and shape.

I know about hardware stores in Y'm where this would likely be sold (e.g. in Talpiot and Givat Shaul).

Does such a store exist in Greater Bet Shemesh?

Thanks for any information you can provide.

--aryeh