You say precious little about the spring you seek - compression or expansion - approximate dimensions - so it's a big guessing game for anybody foolish enough to try and help you - they would be bound to get it wrong.
However...
Here in the UK Amazon sell springs - singly and in kits.
Perhaps it's the same where you live?
Also - if you use Google and select Images on the top left and enter Metal Spring you'll get images of many springs - when you see one close to what you need you can follow he link and maybe get lucky.
Be sure to enter metal spring - if you just put in "spring" you'll get lots of pictures of flowers.
Good luck...
Peccavi, April 2013
