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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

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Our Price: $5.63

Trailer Leaf Spring Suspension

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Shipping Weight: 0.32 lbs

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Redline Spring Mounting Hardware - 166081
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  • Suspension Bolts
  • Spring Mounting Hardware
  • 3 Inch Long
  • 9/16 Inch Diameter
  • Redline
9/16" Diameter spring-retainer bolt is used to mount double-eye spring inside front or rear hanger. Includes locknut. Lowest Prices for the best trailer leaf spring suspension from Redline. Shackle Bolt with Locknut for Double-Eye Springs - 3" Long part number 166081 can be ordered online at etrailer.com or call 800-298-8924 for expert service.


  • All Info
  • Reviews (250)
  • Q & A (66)
  • Videos (1)
  • Photos
  • Why etrailer?

Redline Trailer Leaf Spring Suspension - 166081

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





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


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




Video Transcript for Redline Trailer Suspension 166081 Review

Today we're going to take a look at the 3-inch-long shackle bolt with the lock nut for double-eyed springs. This bolt will secure leaf springs to your front or rear hangar of your trailer's suspension system. Does include this lock nut to secure the bolt into place. Now the bolt itself is a grade-5 bolt. The overall length on this bolt if we measure it from the bottom of the head to the very end and see is going to be right at 3 inches. The bolt size is a 9/16th diameter by 18 threads per inch. The bolt head size is 13/16ths of an inch.

I got example here's a socket. You can see it will fit the head perfectly and then the lock nut which goes on the end right, the size on that is 7/8ths of an inch. You can see it fit rights into a 7/8ths inch socket but that should do it for the review on the 3-inch-long shackle bolt with the lock nut for the double-eyed springs.


Customer Reviews

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

Average Customer Rating:  4.9 out of 5 stars   (250 Customer Reviews)

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

- 166081
by:

Awesome.. Simple to find what I needed, quick delivery and parts ordered were a perfect fit for what I needed. Will use every time! Thanks etrailer.com 513967



- 166081
by:

Product was just as advertised. Quickly shipped and received in time. Packaging was very well done and organized well with everything there as ordered. My only disappointment was to see the words "CHINA" written in bold letters on my springs. I'd much rather have seen USA. 379590


Comments

Thank you for following up. All is good with the products. No issues so far.

John R - 04/05/2018

36938

- 166081
by:

Purchased replacement springs, equalizers, shackles and all the needed hardware to put it all together for my tandem axle boat trailer. While I was trying to figure out all the parts I needed on-line, I made a couple calls to etrailer's customer service and they were awesome! Parts arrived quickly and are exactly what I needed. I put together one of the spring / equalizer / spring set-ups and placed it on the trailer frame to confirm fit. Perfect! Looking forward to swapping all the parts out this weekend. And I'll be shopping with etrailer again soon to get a trailer hitch for my new Durango! Thanks etrailer! 548557



- 166081
by:

The whole order was perfect. I'm rebuilding the running gear on a1976 3 horse slant then remodeling the whole trailer by converting the trailer into a communications trailer for HF radio for disaster response. Front area will be living quarters. I am in our State Guard as a radio operator and also in county emergency management. This trailer will be my shelter and operating station when deployed to hurricanes and such. Since I'm spending my own funds on this, the good prices on etrailer are greatly appreciated. 109562



- 166081
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 213398


Comments

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

Ron A - 07/20/2016

19533

- 166081
by:

Well, I just got the parts, so can't say anything reliable on chinese made parts. The price was(is) Great! a boat load cheaper then the local store....humm. springs fit perfectly, however, the springs I wanted are no longer being offered, could of had springs made but I went with the less$isMore theory. (more in my pocket) The "white" nylon bushings I ordered would not fit into the equalizers, but the grey colored ones I had did fit perfectly, just a-hair difference in outer diameter. The bolts fit perfectly as well. It is always 10 times easier dealing with eTrailer then the local store, So I know eTrailer has put a lot of time into making it easy for their customers, Thanks! Very Fast shipping, all at a price I can afford! 355949



- 166081
by:

The whole order was perfect. I'm rebuilding the running gear on a1976 3 horse slant then remodeling the whole trailer by converting the trailer into a communications trailer for HF radio for disaster response. Front area will be living quarters. I am in our State Guard as a radio operator and also in county emergency management. This trailer will be my shelter and operating station when deployed to hurricanes and such. Since I'm spending my own funds on this, the good prices on etrailer are greatly appreciated. 109557



- 166081
by:

Well made, hard steel, good threads. This bolt/nut set is more expensive than local no-name bolts, but is of superior quality. 264423


Comments

No failures to date. A coat of primer on the ends controls corrosion.

Sam B - 06/25/2017

25412

- 166081
by:

Great product, great service, can't say enough good things about trailer... 468551


Comments

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…

William - 01/21/2019

48750

- 166081
by:

I'm not sure about the quality of the springs that I purchased but etrailer has excellent customer service and support as well as the best prices. Shipping was extremely fast, much faster than I expected. I ordered a set of 4 leaf springs and mounting hardware on Monday around noon and I received and installed them on Wednesday. Thanks etrailer! 400064



- 166081
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. 543853



- 166081
by:

Shipping was great everything fit well I have no complaints 669863



- 166081
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. 667342



- 166081
by:

Everything was exactly as described. Dimensions were perfect. 657578



- 166081
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Great quality great price 658089



- 166081
by:

Perfect fit all parts video was very he lpful. 656796



- 166081
by:

etrailer- always helpful- quick shipping 655260



- 166081
by:

Good quality and fast service. Great service. Thank you 653406



- 166081
by:

The bolts are excellent. I used these bolts in conjunction with links to connect the springs to the equalizer and to the hangers. They worked very well except that I could not apply enough torque to the bolts to pull the serrated end into the links. In each case I had to apply considerable force to the head in order to get the serrations into the links. I did not have a large enough air wrench to achieve the necessary torque and using a wrench required an excessively long handle. (I did not have electricity to run an air wrench.) So I was forced to alternately tighten and then drive the head with a large hammer (3 lb) against another flat piece to drive the bolts in, then tighten again until the heads were set. This makes me question the need for the serrations (the original bolts were also hard to remove). A square hole might be better - similar to a carriage bolt. 652878



- 166081
by:

Product works perfect 647491



- 166081
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. 642554



- 166081
by:

Good quality product 642238



- 166081
by:

suspension bolts fit and are good quali ty 641462



- 166081
by:

Very good I got what I need on time, price lower that other store. 638174



- 166081
by:

The part was part of a repair on my trailer that broke a leaf spring and it fit perfectly. 634849



- 166081
by:

Product as described. Good quality worth the cost. Excellent service. 633158



- 166081
by:

Product is more then needed & it all arrived 4 days ahead of schedule. 613658



- 166081
by:

Excellent product. As alway great and pleasant service. My trailer appreciates etrailer. 612892



- 166081
by:

Quality parts for great prices. Everything was just as described. 601991



- 166081
by:

great 598380



- 166081
by:

Great product. Well made. 594721



- 166081
by:

All parts work perfect. Very fast shipping with a great price. 594341



- 166081
by:

Fast shipping, product was as described and fit great. 585138



- 166081
by:

Good price fast service Bolt as adver tised. 582982



- 166081
by:

They are shackle bolts, exactly what you would expect for the price. 581719



- 166081
by:

Delivered as advertised. 578247



- 166081
by:

Excellent Service and fast delivery 577768



- 166081
by:

Good quality 573903



- 166081
by:

Perfect fit 572480



- 166081
by:

Great line of products I love the fact that you carry the same Parts year after year. I needed to replace my eye bolts for the Springs I bought several years before. 571853



- 166081
by:

Every part I ordered was correct upon delivery and is great quality. Your website is very user friendly. Every part I ordered was in stock also. Thank you. 569160



- 166081
by:

great service, great pricing, 563881



- 166081
by:

order 3 inch shackle bolts and lock nuts along with shackle straps at a good price installed today with no problems. A great company to do business with . 563676



- 166081
by:

I replaced the springs on my boat trailer, I bought all new springs and hardware. Everything worked great. 558902



- 166081
by:

Same great service as before. Thank s. 557013



- 166081
by:

Worked as they should, just what I need ed. 547120



- 166081
by:

Worked and fit perfectly. Just wish I would've bought four instead of two, lol. 542489



- 166081
by:

Great service and fast delivery thanks to Dena in customer service 540691



- 166081
by:

On time 539665



- 166081
by:

Received day expected! Installed without any problems, everything was in good condition, thank you for excellent service. 529920


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Ask the Experts about this Redline Trailer Leaf Spring Suspension
Do you have a question about this Trailer Leaf Spring Suspension?


  • Can I Replace 4 Leaf Springs With 5 Leaf Springs For The Axle On My Trailer
  • Yes, you can replace your 4 Leaf Springs like part # SP-221275 with 5 Leaf Springs like part # SP-111275 as long as you replace all of the springs at the same time. There really isn't any advantage if you want to go with 5 leaf springs over 4 leaf springs. Typically, you always want to try to get the same parts to replace what you already have, but 1/8 of an inch difference per leaf spring won't make much of a difference in how everything fits together. The 5 leaf springs will work just...
    view full answer...

  • Installing Lippert Equaflex Suspension And Never Fail Hardware To 5th Wheel Toy Hauler
  • The Equa-Flex Cushioned Equalizers w/ Never Fail Bushings - Double Eye Springs - Tandem Axle - 6K to 8K # LC279688 and Never Fail Tandem Axle Suspension Upgrade Hardware Kit for Double Eye Springs # LC281285 will give a nice upgrade to your 2014 Keystone Raptor MP300 Toy Hauler. The only hardware you need in addition is the equalizer bolt to your center hanger. For this you can use the Zinc Shackle Bolt with Locknut for Double-Eye Springs - 3" Long # TRFA73Z916DLNZ or standard bolt # 166081.
    view full answer...

  • Replacement Parts to Rebuild Trailer Suspension on 1976 EZTrail
  • All of the products you listed will work together just fine. Keep in mind, if your current springs are not 26 inch springs, like the # SP-124275 you referenced, your hangers, # APS4, will not be in the exact same position as your current ones. When repositioning everything the most important factor is keeping the axle in the same location it currently is. The U-Bolt Kit # APUBR-10 is correct for a 2,000 pound axle and the Shackle Bolt # 166081 will work too. It's hard to tell by the...
    view full answer...

  • 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...
    view full answer...

  • Comparing Bronze and Nylon Bushings for Trailer Suspension
  • It really just depends on what you are looking to get out of the bushings. Bronze bushings, like part # K71-291-00, will last longer but are more noisy and it is recommended to use wet bolts like part # 126B2 to keep them lubricated. Nylon bushings, like part # SP05-060, are much quieter and can be used with regular bolts like part # 166081 since they don't need to be lubricated as much. As far as lifespan goes the bronze will last longer but not so much longer that they are much better...
    view full answer...

  • Trailer Suspension Kit and 6 Inch Long Equalizers for Tandem Axles and Double Eye Springs
  • Suspension kit # APT4 for tandem axles with double eye springs has 6-1/4 inch long equalizers so it is a possible option for you. Kit # AP233-H248 uses 5-3/4 inch long equalizers. But if you have to have equalizer # TREQ310 then the individual parts will have to be pieced together since there isn't a kit with that equalizer. If you go that route then you would also need: 8 of # 18-11GALV 14 of # 166081 1 of # H248 (or other hangers, see link)
    view full answer...

  • Recommended Shackle Bolt for 2,000 lb Utility Trailer Leaf Spring Suspension System
  • The Zinc Shackle Bolt with Locknut for Double-Eye Springs - 3" Long # TRFA73Z916DLNZ is a grade 5 bolt. Your setup as described is a standard setup for leaf spring hangers and double eye leaf springs. The # 166081 is made by the same manufacturer and is used more commonly than zinc plated for most factory applications. The cost difference comes down to supply and demand. The Dexter bolt # 007-003-01 is simply a different manufacturer that has a big name in the trailer axle market. ...
    view full answer...

  • Recommended Leaf Springs and Hardware for 2001 EZ Loader Boat Trailer With 1560 lb Axle
  • There are different leaf spring lengths available for your axle capacity, so you will need to measure from the center of spring eye to spring eye. We have these 3 options: 3-Leaf Double-Eye Spring for 2,000-lb Trailer Axles - 20-3/8" Long # SP-169275 4-Leaf Double-Eye Spring for 2,000-lb Trailer Axles - 26" Long # SP-124275 3-Leaf Double-Eye Spring for 2,000-lb Trailer Axles - 23-1/2" Long # SP-113275 For your connection to your hangers, you will want the Shackle Bolt with Locknut...
    view full answer...

  • Shackle Bolt With Nut For 3 Inch, 3-1/2 Inch, And 3-5/8 Inch Length
  • Shackle Bolt with Locknut for Double-Eye Springs - 3" Long, # 166081 and Spring-Eye Bolt with Locknut for Slipper Springs - 3-1/2" Long # 166079 both come with a nut. The Step Wet Bolt for 1-3/4" Double Eye Springs # 34007-187-00 does not come with the nut, however we have confirmed a fit with nut # 192600
    view full answer...

  • How to Pick Out Replacement Leaf Springs for 2007 Weekend Warrior Model CR3905
  • I was able to find out that your 2007 Weekend Warrior model CR3905 is triple axle trailer with a GVWR of 16k. That means for each axle you'd need a capacity of at least 5,333 lbs. Which means you most likely have 6k axles. We have a few options for that capacity for leaf springs but you'll need to measure the length of your current springs to be sure. If you have 25-1/4 inch long springs you'd need part # SP111275. If you have 26 inch long springs you'd need part # SP-053275. If...
    view full answer...

  • Equalizer/Hanger Kit Recommendation with Equalizer TREQ356
  • We can piece together an equalizer kit for you, however the TruRyde Equalizer, # TREQ356, is not included in an equalizer kit or a hanger kit. Next, you will need 14 shackle bolts that are 3 inches long and have a 9/16 inch diameter. For this, you can use Shackle Bolt, # 166081. Finally, you will need 8 shackle straps. The most common size is the 2-5/8 inch shackle strap, # 115052. I recommend measuring your current shackle straps to verify you are buying the correct replacement...
    view full answer...

  • Recommended Axles, Hubs, And Springs For 1971 Aristocrat Landmark 1 Trailer
  • Based on the information and measurements you gave me, I recommend the Dexter Trailer Idler Axle Beam with EZ-Lube Spindles - 72" Long - 2,200 lbs, # T20BTR-EZ-7258. Then we need to add the hub assemblies and for those I recommend the Dexter Axle Trailer Hub Assembly for 13" to 15" Wheels - 2,200-lb Axles - 5 on 4-1/2 - L44649 Bearings, # 8-258-5UC1. The leaf springs to go with these I recommend are the 4-Leaf Double-Eye Spring for 2,000-lb Trailer Axles - 26" Long, # SP-124275....
    view full answer...

  • Recommended Leaf Spring Bushings and Shackle Bolt with Locknut
  • I recommend using the Never Fail Bushings - 9/16" Inner Diameter, 11/16" Outer Diameter - 1-3/4" - Qty 14 # LC279685. For 1-3/4 inch springs you will want the Shackle Bolt with Locknut for Double-Eye Springs - 3" Long # 166081. There is no specific torque rating for shackle bolts, you simply want to ensure they are long enough so you have at least 2 thread protruding from the bolt. You want to tighten the bolt until the knurls go through the shackle link or hanger and the bolt head is...
    view full answer...

  • 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...
    view full answer...

  • Double Eye Spring Recommendation and Suspension Parts for 6,000 Lb Trailer Axle
  • The leaf spring I recommend is 6-Leaf Double-Eye Spring for 6,000-lb Trailer Axles part # SP-053275. These leaf springs come with 9/16" diameter nylon bushings installed. The amount of leafs do not matter as much as long as the spring is rated for your axle capacity. I recommend TruRyde Shackle Link part # TRSL225. The shackle straps are 2-1/4" long. The bolts you need are part # 166081. I also recommend curved equalizers part # TREQ356 that measure 6-1/8" long. We do not carry an equalizer...
    view full answer...

  • Hangers to Use with Leaf Spring SP-212275
  • The spring you ordered # SP-212275 would work well with the hangers # 115917 and # 30-20 with shackle straps # TRSL350. These parts are very similar to what comes with the # APS1 which is what is recommended with the springs you ordered. Only thing else you might need is the shackle bolt part # 166081. The distance between the hangers would need to be 24-7/8 inches.
    view full answer...

  • Can Replacement Shackle Bolt Have Longer Thread Length
  • I do understand your concern with the potential of a slightly longer thread length on the Shackle Bolt # 166081 causing the shackle strap to sit right on the threads. The fact is though that the shackle positioned there as opposed to the unthreaded shank is not going to cause much of a difference, if any. The shackle straps should not wear down any quicker because of this. As long as the bolt's overall length is correct then this will work perfectly for your trailer.
    view full answer...

  • Replacement Trailer Suspension Shackles, Equalizers and Bolts
  • We can help you with replacement trailer suspension parts for your Keystone Cougar. Our main page for suspension components is linked for you; on this you can select items like shackle straps, spring bushings, bolts and equalizers. Shackle strap # 115052 has a hole spacing of 2-5/8-inches, the closest to yours that we have. Overall dimensions are 4-inches x 1-1/4-inches and the bolt hole diameter is 9/16-inch. With this you can use standard bolt/nut # 166081 or wet bolt # 126B2 which...
    view full answer...

  • Recommended Shackle Straps and Bolts for 7K AL-KO Axles on Moritz Dump Trailer With 7-3/4 Equalizer
  • For your shackle straps, I recommend the 3-1/2 inch # TRSL350 and for your bolts the Wet Equalizer Bolt with Locknut and Grease Zerk for Double-Eye Springs - 3" Long # 126B2. These bolts have the zerk fitting to allow you to add grease for better movement and less noise. If you prefer basic bolts, then I recommend # 166081.
    view full answer...

  • Comparing Lippert Never-Fail Bushings to the Bronze Bushings and Wet Bolt Option for Tandem Axles
  • The bronze bushings and wet bolts are a great option but they still do require maintenance especially under the conditions you referenced. There really isn't any new information in comparing it is basically the difference between maintenance required and zero maintenance. The Never-Fail bushings # LC279685 are maintenance free and self-lubricating so they will be a better fit for you. This kit comes with the bushings for 4 springs and two equalizers for a complete tandem axle trailer....
    view full answer...

  • Tandem Axle Equalizer Kit Recommendation with 6-1/8 inch Long Equalizers
  • I can piece you together everything you need, but there isn't a kit like the part # AP233 that you referenced that has a 6-1/8 inch long equalizer. First you would want the part # TREQ356 as an equalizer. You would need two of them. A quantity of 8 of the shackle straps part # TRSL225 14 of the bolts part # 166081
    view full answer...

  • AL-KO 5200 lb Axle Mounting Bolt Size
  • The U-Bolt Kit for Mounting 5,200-lb to 7,000-lb, Round Trailer Axles - 7-1/4" Long U-Bolts # APUBR-9 are 9/16 inch diameter. These hold the axle to the leaf springs. The bolts that hold the springs to the frame are also 9/16 inches and # 166081.
    view full answer...

  • Comparing Wet and Dry Shackle Bolt Strength Rating
  • A wet shackle bolt like the Redline # 126B2, the type that is hollow with a grease zerk fitting for lubrication, is just as strong as the dry (solid) type like # 166081. Neither variety of this part actually carries a weight capacity rating since the trailer weight is distributed across many of them.
    view full answer...

  • 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 - # SP-256275 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...
    view full answer...

  • Replacement Leaf Springs, U-Bolts, Shackle Straps, and Hardware for Three 7,000 Pound Trailer Axles
  • When replacing springs always replace them in pairs (2 springs per axle) but if you are going to replace all 6 then that is even better. When measuring a spring you have to do it with the weight off of the spring by either removing the spring or jacking up one side of the trailer and measuring on that side. The reason I bring that up is because the double-eye springs that we have do not have the exact measurements that you have provided. Spring # SP-198275 is a close option. Eye...
    view full answer...

  • 3,500 lb Leaf Springs and Hanger Kit Recommendation for a Mobile Home Trailer
  • Mobile home axles/suspension are typically designed for one time use, so picking out components to work with mobile home components can be tricky. Your best bet is to do what you did with your axles and just start over with quality stuff that you will know will work. First let's start with a spring. For a 3,500 lb spring the part # SP-212275 would be a great choice. For a u-bolt kit you would want part # APUBR-1. For a tandem axle hanger kit you would want the part # APT3. The Never...
    view full answer...

  • How Tight to Get Boat Trailer Leaf Spring Shackles
  • 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...
    view full answer...

  • Can Standard Shackle Bolts Replace Stepped Shackle Bolts
  • The Step Wet Bolt # 34007-187-00 is a 9/16-inch diameter overall and 3-inches long. The threaded portion is a smaller 7/16-inch diameter (which is the "step"). You can use this part with the matching 7/16 nut # 192600 or you can use standard non-stepped 9/16-inch bolts like # 126B2 (which has a grease zerk fitting) or part # 166081 that does not.
    view full answer...

  • Recommended Torque Specs for 9/16 and 1/2 Inch Trailer Suspension Hardware
  • If you will be using 9/16 inch fasteners then torque them down to 110-114 foot pounds. If using 1/2 inch torque them to 76-78 foot pounds. You can find all sorts of different torque specs for the same size bolts or nuts and they will all be around these same figures. If you use Loctite use the blue kind, such as # LT37643, which will allow you to remove parts using hand tools. The red kind is going to be too strong. Also make sure the Loctite only goes on the threads and on any part...
    view full answer...

  • Availability of Trailer Suspension Shackles that are 3-1/2 inches Long
  • We only have the # TRSL350 for a shackle that is 3-1/2 inches long from hole center to hole center. Typically these don't wear out as quickly as you described. Are you tightening the shackle bolts really tight which is causing added friction possibly? 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...
    view full answer...


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Info for this part was:

Video Edited:
Zack K
Expert Research:
Michael H
Installed by:
Jeff D
Expert Research:
Jameson C
Video Edited:
Joshua S
Test Fit:
Nicholas E
Expert Research:
John H
Video by:
Alan C

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