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U-Bolt Plate for 2" Square Axle - 1-3/4", 2" Springs - 9/16" Bolts

U-Bolt Plate for 2" Square Axle - 1-3/4", 2" Springs - 9/16" Bolts

Item # 117594
Our Price: $12.82
Trailer Leaf Spring Suspension
Shipping Weight: 1.37 lbs
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Plate works with 9/16" diameter U-bolts (sold separately) to attach your 2" square trailer axle to your 1-3/4" or 2" wide leaf spring. Great Prices for the best trailer leaf spring suspension from Redline. U-Bolt Plate for 2" Square Axle - 1-3/4", 2" Springs - 9/16" Bolts part number 117594 can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (95)
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  • Videos (1)
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Redline Trailer Leaf Spring Suspension - 117594

  • U-Bolt Plates
  • Camper
  • Car Hauler
  • Utility Trailer
  • Square Axle - 2 Inch
  • 3500 lbs
  • 9/16 Inch Diameter
  • Redline

Plate works with 9/16" diameter U-bolts (sold separately) to attach your 2" square trailer axle to your 1-3/4" or 2" wide leaf spring.


  • U-bolt plate acts as part of a trailer suspension system
    • Helps secure a square, 2" wide axle to a 1-3/4" or 2" wide leaf spring
    • Requires (2) 9/16" diameter U-bolts (sold separately)

117594 Redline U-Bolt Plate for 2" Square Axle - 1-3/4" or 2" Wide Leaf Springs - 9/16" Diameter U-Bolts

Video of U-Bolt Plate for 2" Square Axle - 1-3/4", 2" Springs - 9/16" Bolts

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Redline Trailer Suspension 117594 Review

Today, we'll be reviewing part number 117594. This is Redline's U-bolt for 2 inch square trailer axles. The U-bolt plate is going to act as part of a trailer suspension system. It's going to help secure a square 2 inch wide axle to a 1 3/4 inch, or 2 inch wide leaf spring. It does require 2 U-bolts, that are going to measure 9/16 of an inch in diameter. If we take a measurement of the plate itself, it's going to give us a measurement of 5 1/2 inches by 4 inches. If we measure the distance between each hole, going this direction, it's going to give us a measurement of 2 3/4 of an inch. If we measure the distance, center on center this direction, it's going to give us a measurement of 2 5/8 of an inch. It's a raw steel finish, so it can be primed and painted.

Then, adding a rust protectant on there would be a good idea, before installing this product. That's going to do it for our review of part number 117594. This is Redline's U-bolt plate for 2 inch square axles. .

Customer Satisfaction Score:

Customer Reviews

U-Bolt Plate for 2" Square Axle - 1-3/4", 2" Springs - 9/16" Bolts - 117594

Average Customer Rating:  4.8 out of 5 stars   (95 Customer Reviews)

Plate works with 9/16" diameter U-bolts (sold separately) to attach your 2" square trailer axle to your 1-3/4" or 2" wide leaf spring.


Had a leaf spring break on my off-road trailer in Mexico. Left it at a boat yard until I received the parts from trailer & returned to replace. Only took 2 hrs to replace both leafsprinhs, shackles, bolts etc. And we were back on the road.


Great Experience!

When I noticed
that the leaf springs on my 44 year old boat
trailer had cracked I thought I would never find replacements.
I fully expected to have to have something custom built.

I was amazed when I found the fantastic diagrams/descriptions
dimensions for replacement springs on

The phone support person was wonderfully helpful in confirming
if items were in stock and ready to ship. The replacement springs
arrived on time and everything bolted up perfectly!

Thanks for such a great site!

Sean S.


hey Joe. Im just curious what type of boat and trailer you are working on because Im doing the same thing to my 1977 sunbird daysailer. Im just wondering if you are working on the same trailer and what parts you used and liked!



Hey Sean, I did this 3 and a half years ago. Its an old Shoreline trailer with a 19 ODay Rhodes 19. I suspect it might be just a little bigger than your daysailer. You should be able to get the correct parts for the trailer you have. Try to find a manufacturers plate on the trailer with modelyear... info and give eTrailer folks a call. Theyll make sure you get the correct parts. Ive used eTrailer for extensive re-ferbs of a few trailers. Good Luck! JoeV


I couldn’t find parts for my customers boat trailer . Nobody had a complete trailer axle . So I finally found etrailer they answered the phone I had all my measurements they took the time to search out what I was asking for . Awsome sales lady she knew what I wanted and found all my parts so I can replace the spindle on the axle
Nice to talk to a person instead of a answering machine
Thanks for your help


Springs & hanger kit worked well.


Perfect companion to the U-Bolts, part SP01-160. Used these to fix the jet ski supports which were breaking off the frame due to cracking welds.


Perfect fit. Solid construction.


Used your videos to sort out pieces and to do the refurbishment on an adapted trailer for my International 110. Great support, timely delivery and good price; unlike the local guys who claimed that size wasn't made!!!
Thank you.


Timely delivery also fit was perfect


Needed plates for my new 2" axle over existing 2" springs that came with my HF folding trailer. I swapped my axle, but couldn't swap the springs due to their shorter length and I didn't want to weld a new spring brace. These plates are very thick compared to the OEM plates I had, so I'd assume it will support well over the maximum load on my trailer. Worked like a charm with the square u-bolts I also ordered from etrailer.


The products etrailer supplies are superior. The only confusing part is when I tried to track it provided a UPS tracking number, however, when it was delivered it came via Post Office so the tracking number never completed its routing foremat. No worries and no problem we got the items fine, but things got shifted in transit for some reason. thanks again!


U-Bolts and Plate.
Heavy duty, great
service, fair price. Shipping was on time. Product mounted and functioned as expected.

William M.


All good


Using these to move the axles under the leaf springs in a 1950 Spartan Royal Mansion. Better than the originals. Very satisfied!



Very satisfied after 1 year. Some older trailers like my 1950 Spartan Royal Mansion, ride too low to the ground. One way to help this is to move the leaf springs over the axel from the under axel manufactured position. There is no “nest” for over axel mount, so you need a heftier plate and bolt to crank it on in hopes it holds. This product is heftier and was perfect for the application.


Bought everything to completly rebuild my trailer. All products were good quaility and fit perfectly. The outstanding service was the best part. Never have done trailer work before and I called and talked to support. Got me everything I needed and it was all correct. Upgraded my shipping for free and I still recieved my order quicker than they told me I would.


Great product, as described, description of the measurements fit right on.
I would & have recommend E-trailer to friends.

Rich M.


Fit and works as described, Im happy with the product.


Installed 2 new slipper leaf springs that had broken on a 1977 Skipper-B boat trailer. Total time for installation was less than 2 hours, product is as good as new.


Made it super easy to attach my upgraded springs and very beefy! no more tire rub with heavier loads!


Erika was super helpful. Really helped me get the correct parts the first time. I will always use etrailer from now on!!

A+++ in my book!

Ed R.


SUPERB!!!!!!!! Erika at E-Trailer is AWESOME!!!!


U bolts (2”x 5 3/4”) are an excellent replacement for the leaf spring u bolts on a 1950 Spartan travel trailer. The bolt itself is a larger gauge than the originals as well. Very satisfied with the product, service was excellent, and delivery fast as promised.


Full trailer restoration and conversion to disc brakes. Great products.


Used these on my boat trailer after installing new leaf springs and U-bolts. Worked great. Bolt hole pattern was perfect.


It is very difficult to find quality service this day and age; however, I don't have enough great things to say about etrailer. Amazed at how fast it was shipped. Thanks for making this beginner's first leaf spring swap easy.


Delivered quickly, reasonably priced and went on without any issues. Been using the repaired trailer for 1 year.. Good supplier that I'll use again if needed.


Perfect for my project! Thank you !!! I'm beefing up my leaf springs with extra leaf springs. I needed a good pair of U-Bolts and these are perfect !


Perfect fit and excellent customer serv ice


I was unable to find the square u- bolts long enough, all That could be found were too short, but eTrailer had the exact item I needed. Delivery of my purchase was excellent, Two day delivery. I will recommend and use eTrailer again. Ps you can't beat the price anywhere. Gene B, Maryville TN.

Show More Reviews

See what our Experts say about this Redline Trailer Leaf Spring Suspension

  • Galvanized U-Bolt Plate
    The U-bolt plates you have selected are not galvanized or coated. They are steel and would need to be painted and possibly coated with a rust preventative before installation.
    view full answer...
  • Galvanized U-Bolt Plate for 2 Inch Square Axles and 1-3/4 Inch Wide Leaf Springs
    We sure do. U-Bolt Plate # 117594-G is galvanized and attaches a 2 inch square axle to 1-3/4 inch wide leaf springs.
    view full answer...
  • U Bolts for a 3,500 lbs Square Axle
    I have a solution for you but we do not have a 2" square u bolt kit for a 3,500 lbs square axle that is 5 3/4" long. You will need to buy the u bolts and u bolt plates separately. The Square Trailer U-Bolt item # SP01-160 comes in a 2 pack, is 2" wide, 9/16" diameter, 5-3/4" long, and has a 2 1/2" length of threads. The U-Bolt Plate for 2" Square Axle item # 117594 comes single and works with 9/16" u bolts.
    view full answer...
  • U-Bolt and Plate Recommendation for Trailer with 2 inch Axle
    We have axle u-bolts for 2 inch square axles like the # SP01-160 that you referenced but these are much longer at 5-3/4 inches long instead of what I believe I am understanding you say you want 2-1/2 inches in length. This comes with nuts for each side of the u-bolt but for plates you'd then want the # 117594.
    view full answer...
  • Leaf Spring and U-Bolts Recommendation for a Utility Trailer with 2 inch Square Axles
    Sounds like you have 2 inch square axles on your trailer, for a set of U-bolt you would want part # SP01-160 and then for a U-bolt plate you would want the part # 117594. Now to pick out the correct springs you will want to first find out how much capacity your trailer and axles are rated for. This should be stamped on a plate near the coupler where the VIN is located. If it was a round axle I could give you a pretty good ball park of what the capacity would be, but square axles don't...
    view full answer...
  • Are 5-3/4 Inch U-Bolts Long Enough for a 3 Inch Tall Axle and Slipper Spring # SP-040275
    The internal length of u-bolts # SP01-160 is 5-3/4 inches so you would not subtract 9/16 inches from that length. The u-bolt plate # 117594-G is 3/16 inches thick. The spring stack for # SP-040275 I just measured and it is 1-7/16 inches thick. Adding in the 3 inch height of the axle and the total comes to 4-5/8 inches. So all of these parts will fit your trailer axle.
    view full answer...
  • Replacement Leaf Springs and U-Bolts for a 1987 Shore Line Boat Trailer
    Thank you for submitting the photo of your setup. Considering the height of your axle and the amount of clearance you currently have from the axle to the frame of your trailer you wouldn't have enough room to put your axle above the leaf spring. You would barely have a couple of inches of suspension travel. For U-bolts you would want the part # SP01-160 and then for plates you would want the # 117594. Based on the dimensions of your current slipper springs the # SP-040275 that you referenced...
    view full answer...
    Image 1 for
  • Leaf Springs, Hanger Kit, and U-Bolts for a 2 Inch Square Trailer Axle
    Since you do not know the capacity of the trailer axle then you can't go by the capacity of the springs. If the axle is rated for 2,000 pounds and the springs for a 3,500 pound axle then you would still be limited to 2,000 pounds. If you have the inner and outer bearing numbers then that will help to determine what the likely axle capacity is. Since you want to replace the hangers as well as the springs then it doesn't matter which springs you choose. If the axle does end up having a...
    view full answer...
    Image 1 for
  • Replacement Leaf Springs, Equalizers, and Shackle Straps for a Magic Loader Boat Trailer 6K Axles
    There is not an exact size leaf spring, equalizer, and shackle strap length that must be used on your trailer but they do all have to be compatible with each other. That said, the measurements that you provided are fairly standard so I recommend using the Tandem-Axle Trailer Hanger Kit part # APT5 with the 5-Leaf Double-Eye Spring part # e34SR (4). The leaf spring hangers can be discarded but it will be more cost effective to obtain the kit. These components will have the right combination...
    view full answer...
  • U-Bolt Recommendation for 2 inch Square Axles
    Is your square axle a 2 inch square axle? I believe it most likely is and you would want the # UBZC12X212X525 for a replacement u-bolt as this is 5-1/4 inches long and fits a 2 inch square axle. For nuts you would want the # 12ZLN and then for a bottom plate # 117594-G.
    view full answer...
  • How to Pick Out Replacement Slipper Springs for a Boat Trailer with 2 inch Square Axles
    In order to pick out springs you need to remove the load on the trailer so that the leaf spring is not flattened out at all. You will want to measure from the center of the eye of the spring to the center of where the slipper spring contacts the hanger. If that distance is 26-1/4 inches and the capacity of the axle is 4,100 lbs the # e33SR would fit and work well. The bushing of this spring is 9/16 inch in diameter. You will want to use a 9/16 inch diameter bolt so you can either premeasure...
    view full answer...
  • Need a 3-Leaf Slipper Spring Kit for my Boat Trailer with 2 Inch Square Axles
    In order to determine which 3-leaf slipper springs will fit, you will need to take a few measurements of the current springs on your boat trailer. I am including a diagram that shows which measurements are needed. The diagram also includes the measurements of the two 3-leaf springs that we have available. Compare your measurements to those to see if we have a match. 3-Leaf Slipper Springs for 1,500 lb Trailer Axles, # SP-178275 3-Leaf Slipper Springs for 3,000 lb Trailer Axles, # SP-039275 Although...
    view full answer...
    Image 1 for
  • Replacement Trailer Suspension Parts for Trailer with 2 Square Axle
    It looks like you've got a pretty good grasp on all of this and thank you for the detailed information; it looks like most of the parts you've mentioned will work for you. For the leaf springs, the 26" long # e27SR will be the best option for you since springs stretch out over time and they're right around the capacity of what the axles likely is. The next closest size would be the 25-1/8" # e54SR, but I would be hard pressed to believe that your old ones have stretched out over a full...
    view full answer...
    Image 1 for Image 2 for

Do you have a question about this Trailer Leaf Spring Suspension?

Info for this part was:

Employee Robert G
Expert Research:
Robert G
Employee Kathleen M
Video by:
Kathleen M
Employee Cole B
Installed by:
Cole B
Employee Lisa S
Updated by:
Lisa S

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