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Tandem-Axle Trailer Hanger Kit for Double Eye Springs - 3-3/4" Tall Front/Center/Rear

Tandem-Axle Trailer Hanger Kit for Double Eye Springs - 3-3/4" Tall Front/Center/Rear

Item # APT5
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Trailer Leaf Spring Suspension
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APT5 - Tandem Axle etrailer Trailer Leaf Spring Suspension
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Suspension kit contains (2) 3-3/4" tall front, center, and rear hangers and (2) 7-3/4" long equalizers to secure your double-eye leaf springs to your trailer frame. Provides 4-1/2" to 5" of clearance depending on axle size. Lowest Prices for the best trailer leaf spring suspension from etrailer. Tandem-Axle Trailer Hanger Kit for Double Eye Springs - 3-3/4" Tall Front/Center/Rear part number APT5 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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etrailer Trailer Leaf Spring Suspension - APT5

  • Hangers
  • Suspension Kits
  • Spring Mounting Hardware
  • Double Eye Springs
  • Tandem Axle
  • etrailer

Suspension kit contains (2) 3-3/4" tall front, center, and rear hangers and (2) 7-3/4" long equalizers to secure your double-eye leaf springs to your trailer frame. Provides 4-1/2" to 5" of clearance depending on axle size.


Features:

  • Suspension kit lets you attach 4 double-eye leaf springs (sold separately) to your trailer frame
    • Use table below to determine hanger location based on type of leaf springs
    • Does not include components for mounting axle to springs
  • Front and rear hangers provide secure connection points for springs
  • Center hangers suspend equalizers
  • Curved equalizers evenly distribute impacts across suspension for smooth ride
  • Shackle straps allow springs to pivot within suspension
  • Kit includes
    • 6 Hangers
    • 2 Equalizers
    • 8 Shackle straps
    • 14 Shackle bolts
    • 14 Locknuts
  • Installation of hangers requires welding


Specs:

  • Application: 2,000-lb to 7,000-lb tandem-axle trailers with 1-3/4" wide double-eye springs
  • Clearance between trailer frame and axle (depending on axle size): 4-1/2" to 5"
  • Hanger height: 3-3/4"
  • Equalizer length: 7-3/4" from center of bolt hole to center of center of bolt hole
  • Shackle strap length (from center of hole to center of hole): 2-5/8"
  • Shackle bolt dimensions: 3" long x 9/16" diameter



Hanger Locations for Tandem Axle

Leaf SpringsA - Distance Between Front and Center HangersB - Distance Between Center and Rear HangersC - Distance Between U-BoltsD - Distance Between Center of Axle and Trailer FrameAxle Diameter
SP-169275 (1020)24-3/4"24-3/4"29-1/2"5"1-3/4"
(typical 2,000-lb trailer axle)
SP-219275 (PR722)
SP-220275 (PR3)
SP-218275 (PR4)
SP-212275 (PR4B)
SP-111275 (PR5)
SP-198275 (PR6)
29-1/2"29-1/2"33-1/2"4-1/2"3"
(typical 5,200-lb to 7,200-lb trailer axle)

Note: The above table provides an indication of where the included hangers can be mounted on your trailer. The distance between the hangers may vary depending on your specific application. Be sure to verify proper positioning before welding.



TSW-S11 Trailer Hanger Kit for 1-3/4" Double Eye Springs - 3-1/4" Tall

Replaces APT5






Customer Reviews

Tandem-Axle Trailer Hanger Kit for Double Eye Springs - 3-3/4" Tall Front/Center/Rear - APT5

Average Customer Rating:  4.9 out of 5 stars   (159 Customer Reviews)

Suspension kit contains (2) 3-3/4" tall front, center, and rear hangers and (2) 7-3/4" long equalizers to secure your double-eye leaf springs to your trailer frame. Provides 4-1/2" to 5" of clearance depending on axle size.

- APT5
by:

I'm building a trailer for a gutter machine from scratch. And the parts that I got from e-trailer are exactly what I needed, and on top of that they got to my house 3 days earlier than they were suppose to. I know where to order again if I need some more parts in near future ;) thank you guys 123214



- APT5
by:

I received my order very fast. The quality is excellent and everything that I expected. What is also impressive is that if you have questions about setting up your axle kit, etrailer has printable instructions right on their website that will make installation simple. I have built several trailers over the years and appreciate the quality and service provided by etrailer. I highly recommend this company and their products. 613258



- APT5
by:

I bought the spring kit to put on my home built trailer that I put my old heavy slide-in camper on. It more than met my expectations. There was no sway at 75mph or on the 5 mile trail back to camp. 625558



- APT5
by:

The product was shipped quickly and arrived with no apparent damage to the package. The contents are of high quality and worked great on my trailer. My highest compliment is I would buy from a merchant again. I would definitely buy from etrailer again. 824676



- APT5
by:

Great product! Fit perfectly! 809408



- APT5
by:

Product worked great. 797074



- APT5
by:

Great costumer service ! Everything I needed to rebuild my trailers suspension. 794356



- APT5
by:

Great website. Got my order shipped out quickly. 785541



- APT5
by:

Great prices and didn’t take long to get the parts. I got the right parts the first time. 784582



- APT5
by:

Everything can as shown and installed e asily. 778163



- APT5
by:

The items were received on time and they were an excellent buy. I highly recommend etrailer.com to everyone. I will definitely buy from them again. Thank you for your excellent service. 765589



- APT5
by:

Product was exactly as described. Used the info on website for location of mounts. Couldnt be happier. Awesome customer service as well. 752700



- APT5
by:

Had product in 2 days. Was just what I needed.worked great. 730473



- APT5
by:

Just what I needed. The price was right and shipping quick. 728337



- APT5
by:

Everything fit perfectly. Great customer service. 715306



- APT5
by:

I've had the new suspension on my trailer (20' flat bed) for about a year now with no problems, I tow a race car to about 20 to 25 events a year. All the parts fit perfect and are holding up well. Next on the list to do is a complete brake upgrade I will definitely get the parts from etrailer.com.  706958



- APT5
by:

I ordered several things from etrailer 2Axle hanging kit + u bolts and 4 pro grip retractable anchors. Every single thing inside of the box was well packed delivery was outstanding and the parts are solid. The anchor points fits perfectly on the pocket holes on my 2013 F-150, super easy to install and they are more convenient than the anchor points that came with the truck and sits at the bottom of the bed. I will recommend any of you to buy from etrailer they have great customer service, if you need to buy parts for a trailer I would say that this is the place to go! 713206



- APT5
by:

Good quality parts at good prices. Fast shipping, large inventory, and helpful reps. I found everything I need for my dump trailer project, and received them in a few days. 700666



- APT5
by:

Fast delivery and just what I needed. 678856



- APT5
by:

Very fast, great service. I have used them several times and will come back. 678040



- APT5
by:

Fast shipping great service 671407



- APT5
by:

they fit like a glove. thanks a million. 668750



- APT5
by:

Great product fast delivery will use again . 667930



- APT5
by:

I ordered the shackle and hanger kit along with 4 leaf springs. The order was shipped and delivered quickly with all the parts but the box didn’t fare well. There was 2 of the leaf springs hanging out of the box when it was delivered. Maybe start using better packing and a thicker box for such heavy items. All in all I’m happy with the products and will be ordering again soon. 655913



- APT5
by:

Good quality materials and workmanship. Items were as described and work great on my custom built flat bed trailer project. 654395


Comments
Still going strong with no issues after one year.
Duaine - 06/08/2020

79143
28
165
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Ask the Experts about this etrailer Trailer Leaf Spring Suspension

  • Recommended Tandem Axle Hanger Kit For Double Eye Springs
    If you use the 5-Leaf Double-Eye Spring for 6,000-lb Trailer Axles - 25-1/4" Long # SP-111275 which have the same capacity, I recommend the Tandem-Axle Trailer Hanger Kit for Double-Eye Springs - 3-1/4" Front/Rear/Center # APT5 for a tandem axle application. When you follow the attached photo, this will give you the 33-1/2 inch axle spread. For your 6-Leaf Double-Eye Spring for 6,000-lb Trailer Axles - 26" Long # SP-053275, you can use the same system but replace the equalizers with...
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  • How to Find the Correct Replacement Equalizer
    The Tandem-Axle Trailer Hanger Kit for Double Eye Springs # APT5 may have the correct equalizer but you will need to measure the current equalizer to find out. The length from the center of the left-most eye to the center of the right-most eye of your equalizer needs to be the same as the 7-3/4 inch measurement in this kit. Since you said the shackles are hitting the frame I recommend using a kit with a center hanger that is longer than the 3-3/4 inch hanger that comes with Kit # APT5....
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  • Why do Some Trailer Suspension Kits Have Longer Equalizer Hangers
    The reality is that not every manufacturer makes their suspension kits to the same standard sizes. Some use taller hangers with wider equalizers and some might use a taller equalizer with a shorter center hanger. It really just comes down to the preference of the manufacturer and what gives them the ride height and distance between tires that works the best for them. Also the fact that some trailer leaf springs happen to be longer or shorter plays into what is best solution as well. Ideally...
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  • Help Info for Placing Axle Underneath Car Hauler Trailer
    The 60/40 axle placement formula is a great starting point for where to place the axle. That means putting 60 percent of the trailer in front of the axle center and 40 percent behind it. Basically the goal is to have 10 percent of the total weight of the trailer end up as tongue weight as this will allow your trailer to track the best behind your tow vehicle without swaying. I attached a picture and a help article that covers more on this topic for you to check out as well. Sometimes...
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  • What Causes Shackle Straps To Flip Below the Equalizer
    It is not uncommon for the shackle straps to flip once weight is lifted off the suspension but if they do so when you have a load bearing then this will not allow for proper load distribution or suspension travel. The cause of this issue is that the leaf springs are too long, the shack straps are too long, or a combination of both. The best option for you to make sure you get the proper spacing would be to change these parts out. If you can let me know the distance between your leaf spring...
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  • What is Minimum Distance Require between Tandem Trailer Tires When Considering Increasing Tire Size
    The difference in tire diameter will be an additional 2-1/2 inches going from the 225/75-15 which measure 28.4 to the 235/80-16 which measure 30.9 inches. As a general rule of thumb the minimum safe distance between front and rear tires on the same side of a tandem axle trailer is 4 inches. You would need to measure the distance between your tires currently and subtract 2-1/2 inches. If that dimension then ends up being 4 inches or greater the axle placement could be left alone. Looking...
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  • Suspension Hanger Locations for Dual Axle Dump Trailer
    There are some measurements missing that are important in giving you the exact positioning. I've attached a couple articles to assist with the dimensions you must calculate to get your precise 35 inch on center axles. Your center hanger will be obviously directly centered between the two axles and then your other two hangers will be spaced identically on each side. Your spring from the center of the outside hanger to spring seat location is the dimension that would be extremely helpful....
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  • Recommended Axle Kit That Will Add 2 to 4 Inches Of Clearance To Your Trailer
    Adding the Tandem-Axle Trailer Hanger Kit for Double-Eye Springs - 3-1/4" Front/Rear/Center, # APT5, will give you a little more clearance, but it won't gain you the 1 inch you are needing with the spring deflection. Another way to lift your trailer would be an over-under conversion kit. This would add way more height to your trailer...probably closer to 4 inches more. This will change the center of gravity on your trailer too, so it is more prone to effects like sway, but will solve...
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  • Spacing Measurements for Tandem-Axle Trailer Hanger Kit APT5 & Spring SP-051275
    When setting up a new trailer suspension it is best to do a mock-up (by clamping or tack welding the parts in place) to allow you to see how the system functions. There are so many variables that is best to test. Typical spacing dimensions for 25-1/8-inch springs are shown in the chart on the page for # APT5. Since the springs you intend to use, 4-Leaf Double-Eye Spring # SP-051275, are 7/8-inch longer than those listed in the chart, you will want to increase the hanger spacing approximately...
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  • How to Determine Hanger Spacing for Tandem Axle Trailer Suspension with 26 Inch Springs
    Thank you for providing the specs for the suspension components that you already have. Correct hanger spacing really depends on the components being used such as springs, hangers and equalizers. Most of the hanger spacing dimensions that we have are based on our preassembled kits, so we will use that as a foundation for your setup. First, I would either replace all of the front and rear hangers with 2-1/2 inch tall hangers like part # 115918 or replace just the center hangers with 2-1/2...
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  • Trailer Suspension Kit and Leaf Springs Recommendation for a Tandem Axle Boat Trailer 4,600 lbs
    As long as you are replacing everything (hangers, springs, hardware, equalizer), then yes, you can use our trailer suspension kit, # APT5. In fact, this is the kit that I recommend for your trailer. The hangers must be welded to the trailer. The holes that you see in the top of the hangers are actually for welding, not bolt holes. For the leaf springs, you will be much happier with the ride quality of part # SP-212275 for 3,500 lb axles. The other springs you referenced are for 5,000...
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  • Will Trailer Suspension Hanger Kit # APT5 Fit a Trailer with 2-3/8 Inch Diameter Axle
    You can use the Tandem-Axle Trailer Hanger Kit # APT5 for your trailer with the 2-3/8 inch axle. A 2-3/8 inch diameter axle is typically found on 3,500 pound axles which is within the range of this kit (2,000 to 7,000 pound axles). The measurements in the chart on the page can be used as a guide. A better option for a 2-3/8 inch axle is kit # APT3, # AP233-H248, or # APT1. It all depends on the axle spacing, spring measurements, and equalizer length.
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  • Determining Spring Hanger Spacing for Tandem Axle Trailer Fabrication Project
    Thank you for the measurements you provided and for the photo of your trailer suspension mockup showing the spring components' spacing. As long as your shackles do not hit the trailer frame (you mention 1/8-inch clearance) you should be fine, but if you'd like a bit more breathing room you could increase spacing from 29-1/2 to 30-inches without negatively affecting anything else.
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  • Tandem Axle Trailer Suspension System Dimensions for Best Function
    The Tandem-Axle Trailer Hanger Kit for Double Eye Springs - 3-3/4" Tall Front/Center/Rear # APT5 does not have different size shackle straps. They are all 2-5/8 inches from center of hole to center of hole. If your current straps are different lengths, there are a couple of things to look at. The leaf springs may be different lengths, the hangers may not be positioned correctly, or the equalizer may be off-centered. Ideally you can the hangers, springs, equalizer and shackle straps...
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  • Where to Place the Axle on a 4 Foot Long Trailer
    The correct placement for a trailer axle is going to be dependant on the length of the trailer and total weight when loaded. You are first going to want to pick a spot where you think the axle needs to be which is usually about 3/4 of the way back. You will then use a formula which you can see in the attached help article to make adjustments forward or backward until the correct location is found. Please take a look at the attached help article and then let me know if you need any clarifications...
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    I'd need to know what the length of your leaf springs are be able to figure out the proper hanger dimensions. What you'll want to do is go with the distance between the hangers that allows the distance between the equalizer side bolt center and the outside hangers to be right near 1/2 inch longer than the distance between the bolt centers of the leaf spring to ensure you get the correct shackle angle.
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    If the trailer is not loaded then you will often see equalizers that are tilted like yours. It does not necessarily mean that there is a problem with the suspension. If the springs are worn out then the trailer would easily bottom out. If that is not happening then the springs are likely fine. It is possible that some component is not the right size as well. If the springs are too short or the equalizers are not long enough that can affect the geometry of the suspension.
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  • How to Determine Axle Placement for a Tandem Axle Trailer
    To determine the location for the front and rear hangers on your tandem axle trailer you will first need to make sure that you have the correct center point for your equalizer hanger. The center point of your equalizer hanger needs to be located where you will have 60 percent of the frame of the trailer in front of the center of the equalizer hanger and 40 percent behind the center of the equalizer hanger. For example, if the trailers frames length is 18 feet, then the center-line location...
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  • What is Axle Spread on Wider Spread Tandem Axle Trailers
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  • How to Determine Axle Position when Building a Trailer
    There is an easy way to determine axle placement on a trailer. Take a look at the picture I have included. Just plug in the numbers and complete the formula to determine the axle placement. The other factor that is going to come into play is the springs that you are going to use. Once you have the measurements all figured out you can determine which springs are going to work with that set up. I have also included a link to our double-eye suspension FAQ article to the right.
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  • Should Loctite be Used when Install Trailer Suspension Parts
    I would not use any Loctite when installing suspension components on a trailer since the suspension components need to be able to move relatively freely. I would be afraid of getting the thread locker on bolt or something away from the threads. If you were to use a thread locker then use the blue kind. The red is way too strong. The blue will allow nuts and bolts to be removed with hand tools. Maybe I'm just paranoid but for me, I wouldn't use it.
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  • Placement of Suspension When Adding Hangers
    If making a trailer what you need to do is mock up the locations of all suspension components before setting anything because the tongue weight is going to determine the location of your axle, and therefore, your hangers. If you look at the help article I've added on positioning trailer axles there are equations you can use which will help you determine the distances. Without knowing more information such as the hanger kit you are using I would be unable to tell you the locations you...
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  • Option for Lifting Trailer Suspension Where Leaf Springs Are Over Axles
    Your best option is the part # LC407131 which will give your tandem axle trailer a 2 inch lift!
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    Yes the hangers from Hanger Kit # APT5 must be welded to your trailer's frame by a qualified welder, preferably one with experience on trailers. As for the load capacity of the trailer, that will depend on the part of the trailer with the lowest capacity; for example if you have a pair of 3,500 lb axles the trailer bed still needs to be rated for 7,000 lbs of cargo. If it is rated for 5,000 lbs that means your trailer's capacity is 5,000 lbs no matter what axles you have. I have added...
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