Feature Review Replacement U-Bolt with Nuts for 1-3/4" Wide, Square Trailer Axles Video

The shackle links of the #K71-403-00 are 3/8 inch thick.

Square axles can be tough to determine capacity. Often times the same spindle fits a range of axle capacities. The best way to determine the capacity is to get the inner and outer bearing numbers stamped into the metal of the bearings like you did.…

You would need to measure the inside diameter of the hub opening to determine which cap size is needed. You would want to choose a cap whose outside diameter matches the inside diameter of the hub. Some of the most common sizes are 1.980 inch, 1.986…

I pulled one of the #117858 U-Bolt plates out of stock and measured the center to center bolt hole spacing for you. From the center of one bolt hole to the next, from side to side, the measuremsnt is 2-5/8 inches. From center to center front to back…

Installing the U-bolts and plate like that would be fine, but I would recommend putting the plate on the leaf springs and running the U-bolts around the axle instead. The good news is you're replacing them so you can make that change when you…

The Square U-Bolts #381344UB are 1-3/4" wide on the interior of the 3/8" U-bolt. These are 4" long from the inside of the U to the end of the threads. They can be used in place of the U-Bolts that came with the Malone Crossbar…

Yes, the mounting plate part #116308 that you referenced is a confirmed fit for the U-bolt part #381344UB that you referenced.

The Trailer Square U-Bolts part #381344UB is 1-3/4" wide x 4" long x 3/8" diameter. The u-bolts is zinc plated and comes with lock nuts and washers. I have attached a photo showing the above u-bolt in use for you. If you need any other…

It sounds like you are looking for a u-bolt plate which holds the axle to the leaf spring pack via the u-bolts. If so, you can use the U-Bolt Plate part #TRTP175173 which is designed for 1-3/4" diameter axle with 1-3/4" wide leaf springs.

With square axles, neither of our over/under kits will be a fit to raise the height of the trailer so another option is to use longer hangers for the leaf springs. You will just want to confirm the hangar height. You may be able to use a hanger like…

We don't have an over under kit for your application, but, you can make one. U-Bolt Plate - 1-3/4" Diameter Trailer Axle - 1-3/4" Wide Spring - 3/8" Bolts #TRTP175173 Spring seats welded to the axle like the Spring Seat for Typical…

The closest U-Bolts we have are the following. 1-1/2" x 1/2" x 5" #1753223 1-3/4" x 9/16" x 5" #175130 If neither of these will work for your application you can check your local hardware store.