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Shackle Bolt with Locknut for Double-Eye Springs - 3" Long

Shackle Bolt with Locknut for Double-Eye Springs - 3" Long

Item # 166081
Our Price: $7.40
Trailer Suspension Parts
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166081 - 3 Inch Long ABS Fasteners Suspension Bolts
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9/16" Diameter spring-retainer bolt is used to mount double-eye spring inside front or rear hanger. Includes locknut. Great Prices for the best trailer suspension parts from ABS Fasteners. Shackle Bolt with Locknut for Double-Eye Springs - 3" Long part number 166081 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (772)
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ABS Fasteners Trailer Suspension Parts - 166081

  • Suspension Bolts
  • Camper
  • Car Hauler
  • Utility Trailer
  • 3 Inch Long
  • 9/16 Inch Diameter
  • ABS Fasteners

9/16" Diameter spring-retainer bolt is used to mount double-eye spring inside front or rear hanger. Includes locknut.


Features:

  • Suspension bolt attaches leaf spring to front or rear hanger
  • Included locknut secures in place on bolt


Specs:

  • Diameter: 9/16"
  • Length: 3"


166081 Shackle Bolt with Nut





Customer Satisfaction Score:


Customer Reviews

Shackle Bolt with Locknut for Double-Eye Springs - 3" Long - 166081

Average Customer Rating:  4.8 out of 5 stars   (772 Customer Reviews)

9/16" Diameter spring-retainer bolt is used to mount double-eye spring inside front or rear hanger. Includes locknut.

by:

I needed it quickly because on stripped on my trailer and we were getting ready to leave the state in our Wold Pup.

I paid for the extra shipping and they got out and to me in 2 days. Thank you.



by:

These are the exact bolts used by the manufacturer of my trailer. I had a spring break after 10yrs use, so am replacing the springs and all the bolts at the same time, thank you to etrailer for the springs (ordered earlier) and now the bolts/nuts, all arrived quickly and accurately, you are my first choice for all trailer parts for my 7 trailers, thank you and keep up the good work!



by:

Your shipping time went wrong, but Kelsey’s way of handling
My order with problems, made my respect level go up.
Also, on your website, you have a picture of equalizers that look American made, with your name on it. What I received was stamped China and looks cheap…..



by:

When I ordered my kit from etrailer to replace the double-eye leaf springs on my 1970 Shasta Trailer, I decided to save a few bucks and get the bolts at my local hardware store. Big mistake! You wouldn't think a simple 3 inch bolt would be hard to find in your local hardware store. But in fact, i checked five hardware stores and none of them had this particular bolt. What a waste of time! I should have learned my lesson by now, and just give all my parts business to etrailer.com. I have probably spent more than $1000 in the past several months refurbishing our 1970 Shasta. Totally satisfied with the selection at etrailer, and the service is second to none!



by:

I payed to have items delivered on Friday and they weren't delivered until Monday, I was told that extra charge would be reimbursed to my cc, waiting to see if that happens. All products were excellent though. Will do business with etrailer.com again.



by:

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.



by:

The package was poorly shipped and the package came to me split open losing the nuts for bolts. these are special nuts and i can't just go to hardware store to buy some. When I called for replacement nuts they seemed to want to do things right. and said they would be expedited to me
Got a message the next day saying it is going to take 6 days to receive. That does sound like expedited to me. If it was packaged better I would have finished my project, now it is on delay .



by:

It worked great for my trailer.



by:

I think etrailer is Great. I think their customer service is fantastic. My wife and I were in Arkansas, 1200 miles from our home in Ft. Myers Florida. I replaced the original springs on our trailer with new heavy duty springs, but never changed the hangers or bolts. Our trailer was riding very poorly, we needed new hangers and bolts badly because we were headed on a very long 9000-mile trip with many stops all the way to the Monterey CA. etrailer found us a UPS Store along our route to send us the parts that we needed. Many thanks to etrailer for great parts and Fantastic customer service and for helping us with our most Wonderful Adventure!



by:

We have had great experience with eTrailer, These parts came in as described.



by:

We have had nothing but wonderful experiences with the Products from etailer. They have always been very professional and courteous on the phone and very knowledgeable. As a business owner myself, I would highly recommend etrailer.



by:

Melissa T Provided excellent customer service. I Would recommend to everyone use etrailer.



by:

I bought springs, shackle bolts, and u-bolts and plates. Everything was great and fit perfectly. Only issue were the u bolts which were not galvanized. However, at a local trailer store, I bought galvanized U bolts for $4.50 each.
For the DYIers, taking the old ones off took more than 4 hours for each side. My existing shackle bolts were so heavily rusted that I had to cut three off with a hack saw. Difficulty was confined space to operate hack saw with boat still on trailer. However, reassembling the new springs was less than 45 minutes each side.
Must have tools are large diameter 3/4-13/16-7/8 deep sockets (6 point), 2 2 foot long breaker bars and a can of PB blaster.
For safety: Good quality jack stands, minimum of 3--don't rely on the front trailer jack as it may roll.
By the way, I did these myself and I am 64 years old.



by:

Other than the parts taking a month to process, once they were gathered and packaged, they were delivered within 2 days! I replaced both sides with new 3-leaf double eye springs, 4 shackle straps, 6 shackle bolts, 2 Dexter U-bolt plates, and 2 U-bolts. They were really easy to replace and I did it quickly. Looks great, gonna take her out soon.



by:

I purchased the 3000# axle springs and all mounting hardware to replace the old ones on my 1963 travel trailer. My trailer no longer leans to the left and goes down the road better than new. I should have done it many year ago. I received my package on time and installation was easy and fit perfect. Thanks Bridget



by:

I bought a used Jon Boat trailer and first time out the shackle bolt gave out. Perfect fit for my application and I really like the way the nut was made so that it locked on the bolt. I used these with the Never Fail Bushings. I had to drill out the shackle to accommodate this beefy bolts but that wasnt a big deal. I ended up doing both sides that had standard bolts instead of wet bolts. Not sure why only 2 were regular 3/8 inch bolts.



by:

worked perfect



by:

Perfect fit!



by:

I am very pleased with the quality and obvious necessary strength of these shackle bolts and the locknuts. I do wish the free shipping incentive was "Orders Over $50" vs $99 as well as a quicker turnaround for delivery. I ended up having my local trailer guy providing the 3 shackle bolts I needed but I will use these to replace the other 3 eventually and have one to spare. Overall though, I am pleased with this order and appreciate etrailer.com having the selection of components I needed.

Nathan

8/6/2022

My trailer is still going strong and the last periodic maint check of my shackles, bolts, and nuts is A-OK.



by:

Great product, great service, can't say enough good things about trailer...

William

1/21/2019

Still going strong!!! I dont really beat on my stuff. I was given a trailer that had seen better days, I rebuilt most of the mechanicals on it & its still serving me well…Thanks for the follow up though…



by:

I fixed my 5 wheel today with all the parts I got from you changed,all the equlizers and the shackles on both sides,my fifth wheel camper was blowing tires left and right.the shackles were almost wore all the way through the the end of the shackle.the tires were out of line with a straight line by two inches,when I got the new parts on the tires were right in line.thanks for the great prices and your web sight was easy to use and fast shipping I will be ordering from you again.thanks ron

Ron A.

7/20/2016

The equilizers worked great I havent blown a tire yet thanks for all your help Ron



by:

I replaced my leaf springs and shackles on my trailer and these bolts fit perfect. They come with lock nuts and they definately won't be coming loose. If I had to do it again I would have bought an impact wrench to make the job go quicker.



by:

Worked perfect!



by:

Just what I needed



by:

Excellent service/delivery. The replacement components were badly needed and worked well. Dragged the trailer from Anchorage Alaska area to the Wichita Kansas area with no problems.


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Show More Reviews

See what our Experts say about this ABS Fasteners Trailer Suspension Parts

  • Leaf Spring and U-Bolt Kit for Dexter 4,000 lb Axle
    Yes the leaf spring part # e27SR would be the correct spring for your 4,000 Dexter axle. This is a very standard length trailer leaf spring at 26 inches and will work well on your trailer. Then for a U-bolt kit part # APUBR-1 would be what you'd need and then for shackle bolts part # 166081.
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  • Torque Spec for 9/16" x 3" Long Bolt for Suspension
    There is not a specific torque requirement for bolts like the Shackle Bolt # 166081. You'll want to make sure that you're using a lock nut and ensure that the bolts you use are long enough so that when installed you will have at least 2 threads protruding that lock nut.
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  • What are the Proper Components Needed to Install the Leaf springs On a Trailer
    Building a single axle trailer you will need the following items to install leaf springs. I have listed the part numbers for the PR626 Springs next to the items needed. 2 Springs - # e27SR 2 Front Hangers - # 115917, 1-1/2 inch tall or # 28-5, 3-1/4 inches tall 2 Rear Hangers - # 30-20, with 1-1/2 inch or # 93003-3x, with 3-1/4 inch 4 Shackle Straps - # TRSL313 6 Shackle Bolts and Nuts - # 166081 These components are available in the following Kits. Single Axle Trailer Hanger Kit 1-1/2...
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  • How to Choose Replacement Springs and Axle for a Trailer with a 3,500 Lb Axle
    In order to determine the correct trailer axle for you I would need to know the distance between the spring seats as well as the distance between the hub faces on your trailer. For example, the Dexter Trailer Axle Beam with EZ-Lube Spindles part # T3584F-EZ-8974 has a 74" spring center and 89" hub face with a 3,500 lb capacity. The correct u-bolts for this axle is part # APUBR-1. If you trailer does not match the above dimension then I recommend using the Timbren Axle-Less Trailer Suspension...
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  • Torque Specs for Axle Spindle Nut, Suspension Hanger Bolts, and Lug Nuts for Trailer
    It looks like you might be asking about a few different torque specs so I'll address all of them separately. For a trailer axle spindle nut like part # 165686 you will need to run the spindle nut down until there is no more side-to-side play in the hub and then back it off to the next notch so you can secure the cotter pin, like part # 165649, through the spindle. When it comes to hanger bolts like the Redline # 166081 there isn't a specific torque rating either as you just need to make...
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  • Using Wet or Dry Shackle Bolts in Rear Leaf Spring Hanger of Single Axle Trailer
    You can certainly use the 30-20 spring hanger with the # 166081 bolts, or you can use the wet bolts like part # 126B2. The bolt features a grease zerk that would allow you to grease the inside of the bushing. Using the wet bolt would probably make the suspension a bit quieter as well as helping the component to last longer.
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  • Can Shackle Bolt with Locknut, # 166081 Be Used in Place of Dexter Bolts
    You will be able to use the Shackle Bolt with Locknut, # 166081, in place of the old Dexter bolts you have. If the bolts were shorter, you would not be able to use them but since they are basically the same length, you should not have any problems. I have included a link to a video on replacing shackle bolts that you may find helpful. We have numerous shackle links depending on what size you need. I have included a link to them for you to view along with a link to our FAQ articles on trailer...
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  • Replacement Equalizer Measuring 6-1/8 Inches Long
    I do have all of the parts you need but unfortunately they are not offered in an all inclusive kit. Instead, you would need to purchase them separately. For this, you can use part # TREQ356 for the equalizer, part # 115052 for the shackle strap, and part # 166081 for the shackle bolt. I have attached a review video on each of the above parts for you as well.
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  • Components of Tandem-Axle Trailer Hanger Kit APT5 Without Hangers
    I'll go ahead and list out all the components (minus the hangers) for you of the Tandem-Axle Trailer Hanger Kit for Double Eye Springs # APT5: - 2 of the Curved Equalizer for 1-3/4" Wide Double-Eye Springs # TREQE1 - 8 of the Replacement Shackle Strap - 2-5/8" Long # 115052 - 14 of the Shackle Bolt with Locknut # 166081
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  • Replacement Double Eye Spring For A 2019 Grand Design 351M 5th Wheel Toyhauler
    The 7-Leaf Double-Eye Spring for 8,000-pound Trailer Axles # DX74XR will work for your 2019 Grand Design Toyhauler. The springs have a sturdy steel construction and the nylon bushings are included. The spring capacity is 4,000 pounds and the axle capacity is 8,000 pounds. The length from center of spring eye to center of spring eye is 24-7/8 inches. The shakle straps associated with the spring are 2-5/8 inches long # 115052. For a wet shackle bolt that you can add grease to with...
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  • Replacement Bushings, Eye Bolts, and Shackle Straps for a 1-3/4 Inch Wide Leaf Spring
    The prices are a reflection of factors such as demand, availability, cost, and several other variables. The nylon bushings are also the least cost effective component of the kit. Unfortunately, we do not offer the Never Fail Tandem Axle Suspension Upgrade Hardware Kit for Double Eye Springs part # LC281285 with 1-3/4" long bushings. If you have 1-3/4" wide leaf springs then you will want to piece your own kit together with the Never Fail Bushings part # LC279685, Shackle Bolt with Locknut...
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  • Replacement For 25-1/2 Inch Leaf Springs on Boat Trailer
    Leaf springs flatten out over time, so since yours are 25-1/2" center to center, you'll want to go with ones a little shorter than that: - 3-Leaf Double-Eye Spring for 4,000-lb Trailer Axles - 25-1/4" Long - Dacromet # e93SR The # e93SR says for "4,000 lb" axles but that is just their capacity; you said you have 2-3/8" axles, which is a 3,500 lb axle, so this will give you a bit of added strength. You mentioned 3" shackle bolts as well, and for those use # 166081. Then for the U-bolts,...
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  • Replacement Nylon Bushings And Wet Bolts For Leaf Springs On A 2000 Pequea 1018 Deckover Trailer
    When it comes to replacing your spring bushings you will first need to remove one from your current double eye leaf spring on your 2000 Pequea 1018 Deckover Trailer and use a Digital Caliper # PTW80157 to find out what the inner and outer diameter of your bushing is. The Nylon Bushing # TRBU11566 has a 9/16 inch inner diameter and has a 11/16 inch outer diameter. The Shackle Bolt # 166081 is needed to install the bushing. The Nylon Bushing # TRBU11506 has a 1/2 inch inner diameter and...
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  • Is There A Suspension Kit Which Contains 8" Long Straight Equalizers
    The Straight Equalizer 8" Long part # TREQR89 isn't offer in a kit but we do still have all the other parts you need, shackle straps part # TRSL313 (8) and eye bolts part # 166081 (14). If you want a kit, we have upgrade options like part # K71-358-00 (2) or part # LC281285
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  • Trailer Suspension Hanger Kit that Uses 356 Equalizer or the Individual Parts to Make a Kit
    No, none of the suspension hanger kits we have use equalizer # TREQ356. You would have to get the parts individually or get a kit with the proper sized hangers and shackle straps and just add additional equalizers. For a 2-9/16 inch hole center to center shackle strap we have # TRSL256. For bolts you can use # 126B2 for a wet bolt and nut or # 166081 for a regular bolt with nut. For the hangers though there are lots of options and I don't know exactly what you need so I have included...
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  • Torque Spec For Leaf Spring Shackle Bolts
    There is no specific torque rating for shackle bolts. You'll want to ensure that the bolts you use are long enough so that when installed you will have at least 2 threads protruding from the nut. Make sure that the bolt you're using has a lock nut, like part # 166081. If the bolt you are using has knurls at the bolt head, tighten the bolt down until the knurls go through the shackle link or hanger and the bolt head is flush. Then back off the nut slightly so that all of the components are...
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  • Recommended Heavier Duty Leaf Springs For 25 Trailer With Tandem 3500lb Axles
    We have exactly what you are looking for. Since your leaf springs are right around 25-1/4" long with no weight on the axle I recommend the 3-Leaf Double-Eye Spring for 4,000-lb Trailer Axles # e57SR which will give you the extra support you are looking and will bolt right up to your trailer. For replacement U bolts you will need four of the # CE23002, and for new hardware for mounting the springs to the hangers we have the # 166081 which is a standard bolt and nut, or the # 126B2 which...
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  • Can Trailer With 1-3/4 Inch, 2,000 lb Slipper Springs Change to Double Eye Springs
    Yes, you can change from 1-3/4 inch slipper springs to double eye springs on your trailer. You will need to have the slipper end hanger removed and have a new hanger welded on which allows the leaf spring to sit at the same height. Or you could replace all of your hangers with a brand new kit if you like, and I have added a link below to our entire selection of hangers and hanger kits for you. Then you just need the leaf spring and bolts, and for your 26-1/4 inch springs I recommend a...
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  • Bolts Needed To Install Slipper Springs
    For the spring eye you would use the Spring-Eye Bolt with Locknut for Slipper Springs - 3-1/2" Long # 166079, but slipper springs don't have the second spring eye, so a bolt is not used on the back end. You can also use a wet bolt like # 126B2, for less friction. The Shackle Bolt with Locknut for Double-Eye Springs - 3" Long # 166081 are for use with the spring and shackle straps used with a shackle straps on a tandem setup with an equalizer but it could be used for the springs and the...
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  • Replacement For 25-1/2 Inch Long, 5-Leaf Double-Eye Leaf Springs With 6,000 lb Rating
    Appreciate that info, and to since leaf springs elongate a bit over time with use, you'll want to go with springs slightly shorter than 25-1/2 inches. And for a 20,000 lb tandem axle dump truck, I recommend 6,000 lb rated springs. So for the springs as well as mounting bolts what you'll need are the following: - 5-Leaf Double-Eye Spring for 6,000-lb Trailer Axles - 25-1/4" Long # e34SR - Shackle Bolt with Locknut for Double-Eye Springs - 3" Long # 166081
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  • Tandem-Axle Trailer Hanger Kit For Double-Eye Springs Without Hangers
    (2) 7-3/4" Long curved equalizers # TREQE1 (8) 2-5/8" Long shackle straps # 115052 (14) 3" Long x 9/16" diameter shackle bolts with locknuts # 166081 We don't have the # APT5 with the larger hangers or a kit with those specific parts without them, so I listed the parts as you asked. The 7.75 inch length is not a length we carry, they would have to be custom made. The tallest non-slipper spring hanger we carry is the # 115919 at 5-7/16 inches tall.
    view full answer...
  • Can Suspension Wet Bolts Be Used with Both Nylon and Bronze Bushings
    You are correct that wet suspension bolts like # LC126238 are usually used along with bronze bushings for the longest possible service life but using them with nylon bushings is permissible. If standard bolts like # 166081 were to be replaced with wet bolts it would be fine to continue using the existing nylon bushings (for convenience) but in an all new installation bronze bushings would be preferred.
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  • Replacement 3-Leaf Double Eye Springs For A 2015 Pacific Coachworks 14RBS
    I went ahead and checked your previous order, and found that you did in-fact order the 3-Leaf Double-Eye Spring for 4,000-lb Trailer Axles # e57SR. The SumoSprings Trailer Helper Springs # TSS-107-40 are designed to work well with either # e57SR or # e54SR as long as your axle capacity is between 3,000-5,000-lbs. However, if you're planning on changing out your current leaf springs # e57SR with # e54SR, you're going to need to change out both leaf springs to ensure that you have proper...
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  • Recommended Suspension Components For Double-Eye Springs On Tandem Trailer
    We do not have any kits that have all the components with the dimensions you asked for. You can go a couple ways. You can choose to go with the kit you asked about, part # APT4, and then choose different shackle straps. You will need a quantity of 8 shackle straps. We do not have 3 inch shackle straps available. We do have part # TRSL313, that measures 3-1/8 inches center to center. The overall length is 4-3/8 inches. Or you can order the following components separately (2) 6-1/4 inch...
    view full answer...


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