Anyone have any good sources for nylon / plastic threaded rod?

[jason the filter freak]

I'm trying to find long-threaded bolts/screws approximately four and a half to five inches in length or threaded rod (and nuts to go with whatever I find). I can't seem to find any place that sells it that doesn't charge anything amount for shipping. Anybody have any good sources?

[lowlizard]

3d printer?

[Jon Lazar]

Depending on your requirements for diameter and length, you could look at the nylon bolts and nuts used for toilet seats.  They make long ones up to about 4".