Low Range Off Road is your source for all the suspension components you will ever need for your Suzuki Samurai. The factory spring bolt on a Samurai is 12mm (.472 inch). All Aftermarket Shackles are 1/2" holes (.500 inch). These are the bolts used with aftermarket shackles with Energy Suspension Bushings for Aftermarket Shackles. These are priced per kit, which includes 1 bolt, the 2 washers and 1 nut. For a whole Samurai you will need 12 bolt kits. If you have purchased aftermarket shackles, you will only need 4 bolt kits to be used on the fixed spring end.
NOTE: On the Samurai for the fixed mount (non shackle end) you will need to drill out to 1/2" with these bolts when used with aftermarket shackle bushings.