Can you please provide the source for these 'flanged washers'.
I've wondered for years how you keep the top of a carriage bolt from spinning out and now I know !
I searched on flanged washers and could not find them on ebay, so I'm wondering if they go by another name?
Thanks for posting your build.
[quote="Tommy2tone_1999"]Roofing Asphalt Compound applied to bottom side of floor for waterproofing.
![Image](https://www.tnttt.com/gallery/image.php?mode=medium&album_id=3448&image_id=118490)
Using these fanged washers to allow me to tighten the carriage bolts that secure the floor to the trailer frame.
![Image](https://scontent-b-ord.xx.fbcdn.net/hphotos-prn1/t31.0-8/1537874_10203051603746990_173130622_o.jpg)