Yesterday I had the misfortune of breaking a leaf spring on my single axle Calkins Trailers. While towing my boat. It is a 3500 lb gross trailer.<br /><br />Locating a pair of new leaf springs was a piece of cake here in Everett, Wa. <br /><br />Then the crab bait hit the fan. I broke a 1/2 inch u-bolt while mounting the axle on on the new leaf spring. I have had ZERO success locating replacement u-bolts here in Everett. I have tried Six Robblees & Harbor Marine. Everyone else I went to refered me to one of these two.<br /><br />I am looking for hardware sources in Puget Sound basin. If I can find a internet source that would be fine too.<br /><br />I need a high strength 1/2" dia. square u-bolt to fit a axle plate with 2 3/8 inch centers. The u-bolts need to be 2 1/2" long.<br /><br />In retro spec, I was very lucky that the bolt broke with the trailer up on the jack stands. I want to replace all 4 u-bolts.<br /><br />Thanks, Don