Numrich has the correct bolt stock for a whopping $3.20. Here's the part #: 489400B.
Edit: If you order the part over the internet, the shipping is free, but you have to call after hours to get the shipping discount code.
Also, the bolt washer is a standard split washer you probably have laying around in your garage.
Last edited by gyvel; June 3, 2012 at 07:26 AM.