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

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

Part Number: TRFA73Z916DLNZ
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$5.24
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9/16" Diameter spring-retainer bolt is used to mount double-eye spring in front or rear suspension hanger. Locknut included. Great Prices for the best trailer suspension parts from TruRyde. Zinc Shackle Bolt with Locknut for Double-Eye Springs - 3" Long part number TRFA73Z916DLNZ can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (460)
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  • Videos (1)
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TruRyde Trailer Suspension Parts - TRFA73Z916DLNZ

  • Suspension Bolts
  • Boat Trailer
  • Snowmobile Trailer
  • 3 Inch Long
  • 9/16 Inch Diameter
  • TruRyde

9/16" Diameter spring-retainer bolt is used to mount double-eye spring in front or rear suspension hanger. Locknut included.


Features:

  • Suspension bolt attaches leaf spring to front or rear hanger
  • Corrosion-resistant zinc finish
  • Included locknut secures bolt


Specs:

  • Bolt diameter: 9/16"
  • Length under bolt head: 3"
  • Usable length: 2-3/8"
  • Thread length: 5/8"
  • Thread size: 9/16"-18 fine
  • Bolt head diameter: 13/16"
  • Quantity: 1 bolt and 1 nut


Dimensions on bolt


FA-7-3Z and FA-916DLNZ TruRyde Zinc Shackle Bolt and Lock Nut





Video of Zinc 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 What to Know About the Zinc Shackle Bolt with Locknut for Double-Eye Springs

Hello everybody, this is Jeff at etrailer.com. Today we're gonna take a look at the three inch long, 9/16 diameter Zinc Shackle Bolt with the locknut for your trailer leaf springs. Now, this 9/16 diameter shackle bolt is used to mount your leaf spring to your trailer's front or rear suspension hanger, and this part will include the locknut that secures the bolt to the hanger. Both these parts are a corrosion resistant zinc finish. This is for a quantity of one bolt and one locknut. Now, few dimensions, we'll start with the bolt itself, we mentioned the diameter on this, it's gonna be right at 9/16 of an inch.

The bolt head size or the socket size you would use on this, it's gonna be 13/16 of an inch. Now, the length under the bolt head to the very end of the bolt is gonna be right at three inches, the usable length, which would be from under the bolt head to where the thread starts, is 2 3/8 inches, and just the thread length is about 5/8 of an inch. Now, the thread size on this is 9/16 by 18 threads per inch, and the lock nut, which will install right on here, when you go to install it, that's gonna have a diameter or head size of 7/8 of an inch. But that should do it for the review on this three inch long, 9/16 diameter Zinc Shackle Bolt with the locknut for your trailer leaf springs.

Customer Satisfaction Score:


Customer Reviews

Zinc Shackle Bolt with Locknut for Double-Eye Springs - 3" Long - TRFA73Z916DLNZ

Average Customer Rating:  4.8 out of 5 stars   (460 Customer Reviews)

9/16" Diameter spring-retainer bolt is used to mount double-eye spring in front or rear suspension hanger. Locknut included.

by:

I don't write many reviews--usually only when something is really bad or really good. I have been rebuilding a trailer and this is only my second order from etrailer.com. Their service is unmatched by any company I have dealt with in a long time. I will continue to do business with them.



by:

New bolts made replacement of springs e asy



by:

It was great. Couldn't find anywhere el se



by:

Ideally, the shoulder of the bolts should be long enough to extend all the way through the spring and shackle so that the threads are not subject to load or moving parts. The treads are the weakest portion of any bolt and should only be exposed to tension, not sheer loads. This being trailer hardware, I guess that design factor is not a high priority. Just seems like it could be done right with just a smidge more effort or consideration. That said, the original bolts I removed had only a slightly longer shoulder and one-half the shackle was riding on threads and it held up for years, although it was worn considerably more in the threads.



by:

Parts are a 5, delivery options questionable.Can't delivery 10 pounds of metal in a paper mailer. Was tore open on the bottom. I run a mailing business and I can tell you its not that much more expensive to use a box.



by:

Good quality shackle bolts. Would buy a gain!



by:

Delivered on time, excellent customer phone support, worked as I expected.



by:

Awesome order



by:

Works fine, nothing special.



by:

As advertised



by:

Didn’t use them.



by:

Great product. Shipped earlier



by:

Good fit / worked well



by:

Shackle bolts fit perfect



by:

What can I say they are bolts they are still bolted in!

Lee

12/24/2023

Haven’t had any issues, they are on a small utility trailer. They work fine.



by:

Great price and quality



by:

Great product.



by:

exactly what i needed



by:

Parts looked good.



by:

Just what I needed! Thanks for the great customer service and the expedient shipping.



by:

Perfect fit for the leaf spring install ation.



by:

Worked for what I needed. No issues so far.



by:

Wth rusted out leaf springs on my trailer but with zero experience replacing them, I contacted etrailer and Shawn was very helpful in selecting the right parts and taking me through the process. She was patient in terms of helping me take the right measurements and suggesting the bolts and pieces I needed to do the job right.

Everything came well packaged and complete two days later. An hour after that the springs were in my trailer and now has a boat sitting on it.

Thanks!



by:

Perfect fit, self locking good quality.



by:

Good price and they fit perfectly.


25
460
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See what our Experts say about this TruRyde Trailer Suspension Parts

  • U-Bolt Kit For Double-Eye Leaf Spring e48SR
    Here is what you need for a rust-resistant U-bolt kit and shackle bolts to go with the 4-Leaf Double-Eye Spring # e48SR: - CE Smith U-Bolt Kit for Mounting 3,500-lb, Round Trailer Axles - 5-1/2" Long U-Bolts - Zinc # CE23002 - Zinc Shackle Bolt with Locknut for Double-Eye Springs - 3" Long # TRFA73Z916DLNZ
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  • Do You Have The Replacement Open Eye Leaf Springs and Hardware For a 2001 Load Rite Boat Trailer
    The only open eye 1-3/4" wide leaf springs we currently carry is the etrailer # e24SR & # e33SR. I have no way to verify the weight capacity for your current springs but as it is only a 2" square axle this spring is likely much heavier than you will need. We do have the U-Bolt Kit # CE23103 for your axle which includes 4 u-bolts, 2 plates and 8 washers and nuts. Then you will need 2 of the Hanger Bolts # TRFA73Z916DLNZ for the leaf springs.
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  • Troubleshooting Tandem Axle Trailer Leaf Springs Hitting Trailer Frame at Equalizers
    It does look like you have shackle straps that are to long and possibly worn out bushings. You can replace your shackles with the 2-1/4" Shackle # LC122487. You will need 8 of these for the entire trailer. I would recommend pulling a couple of the Shackle Bolts # TRFA73Z916DLNZ to determine if they or the Nylon Bushings # TRBU11566 are worn and causing extra clearance which may explain if this is something that just started happening recently. You will need 14 of the bushings and 8 bolt...
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  • What is the Pin Diameter of 4-Leaf Double-Eye Spring for 4,000-lb Trailer Axles - 26" Dacromet
    The 4-Leaf Double-Eye Spring for 4,000-lb Trailer Axles part # e48SR is designed for a 9/16" diameter bolt like the Zinc Shackle Bolt with Locknut part # TRFA73Z916DLNZ. If you were to remove the included nylon bushing the hole diameter would be 11/16" diameter. For example, if you wanted to replace the nylon bushing with bronze you'd need the Leaf Spring Bushing part # LC32SV.
    view full answer...
  • Parts Needed For Adding 1,000LB Slipper Springs To a Cart With No Suspension
    You will need 2 of the Front # CE14016G and Rear # CE14017G hanger brackets to attach 2 of the 2-Leaf Slipper Springs # SP-177275 to your cart. You will need 2 of the Zinc Shackle Bolts # TRFA73Z916DLNZ to attach the leaf springs to the front hanger. If you can tell what shape and size axle you have I can help you find the U-Bolt Kit you need. We have some like the 1-1/2" Square # CE23102 or 1-3/4" Round # CE23000 depending on the size of your axle.
    view full answer...
  • Switching From Wet Bolts to Standard Shackle Bolts
    I'm not really sure why you would want to switch from wet bolts to standard shackle bolts as they will prolong the life of the bushing but we do have what you need, the Zinc Shackle Bolt with Locknut part # TRFA73Z916DLNZ which is 9/16" diameter x 3" wide. If you are switching to standard shackle bolts, I recommend bronze bushings like the Dexter Bronze Bushings part # K71-291-00.
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  • What Bolt Grade is the part # TRFA73Z916DLNZ
    The bolt part # TRFA73Z916DLNZ that you referenced is a Grade 5 bolt.
    view full answer...
  • Determining Correct Replacement Leaf Spring For Trailer W/ 3000lb Axles and 27" Long Springs
    The # SP-210275 you were looking at is for a 3500lb axle and is 27" long measured from center of spring eye to center of spring eye. This is the correct spring for your trailer based on the measurements you provided. The next shortest spring would be 2" shorter which would be much too short. For replacement equalizers we have the # TREQR89 which is 8" long and has a center hole of 9/16", or the # TREQR83 which is 9" long and has a 3/4" center hole. For replacement hardware you can use...
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    Image 1 for
  • Installation Bolts for Equa-Flex Cushioned Equalizers
    You will need at least 10 bolts for the Equa-Flex Cushioned Equalizers # LC279687, and those bolts are the Zinc Shackle Bolt with Locknut for Double-Eye Springs # TRFA73Z916DLNZ. The reason I say "at least" 10 is because you would need additional bolts if you wanted to replace the bolts that attach your leaf springs to your hangers. What I recommend is getting all of the necessary bolts, shackle straps and nuts with one kit that is designed to work with the Equa-Flex, the Lippert Components...
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  • Heavy Duty Suspension Kit for 3-1/4 Inch Shackle Straps
    Having a 1 inch difference in the length of the shackle straps would be a pretty drastic change to the amount of articulation you get out of your suspension, so going with that kit wouldn't be advisable. We don't have a kit that uses longer heavy duty shackles, so you'd need to assemble the parts separately. • You'd need two of part # K71-358-00 • Two # TREQ104 equalizers • Two of # TRFA73Z916DLNZ shoulder bolts with nuts This will provide you the same kit, but with longer shackle straps....
    view full answer...
  • Corrosion Resistant Shackle Bolt
    Because of its Zinc finish, the # TRFA73Z916DLNZ shackle bolt would definitely do a better job resisting corrosion than the # 166081 bolt with its raw steel finish.
    view full answer...
  • Will Road Armor Equalizer Replace Equa Flex Equalizer # LC279687
    The Road Armor Shock Absorbing Equalizer Kit # LC696740 that you referenced is close enough dimensionally to the Equa-Flex equalizer # LC279687 that you have now so it will fit and work well. Bushing come with this already pre installed, for bolts you'd want the part # TRFA73Z916DLNZ but for shackles you'd need to let me know what length you have currently. I attached a link to a page that has all of the shackles we carry as well.
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    Image 1 for
  • Never Fail Bushing Or Shock Installation On A Tandem Axle Trailer
    The correct Never Fail Bushings for your trailer are part # LC279684. The Never Fail Bushings are not compatible with wet bolts kits therefore, you will need to use the Zinc Shackle Bolt with Locknut for Double-Eye Springs part # TRFA73Z916DLNZ. Even with the Never Fail Bushings and Upgraded Equalizers, you will still see an improvement in your trailers handling and stability if you add shocks. The shocks will allow for a much greater distance of suspension travel and smoother ride. In...
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  • Hardware Needed With the Road Armor Equalizer Kit
    When using the Road Armor Shock Absorbing Equalizer Kit # LC696740, for bolts you want ten 9/16" suspension bolts part # ABS34FR and 8 shackle straps per axle. The kit you are talking about which is part # LC64FR has the correct parts from Lippert, but not enough of them. The correct shackle straps also depends on your trailer. If you let me know what length your shackle strap is I can recommend those too. The most common size for the type of trailer you have is a 2-5/8 inch shackle strap...
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  • 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. ...
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    Image 1 for
  • Is Road Armor Equalizer Upgrade Better Than MORryde
    You will definitely want to go with the Road Armor Shock Absorbing Equalizer Kit # LC696740 over the MORryde as the Road Armor has more travel and will provide a smoother ride. Then, in regards to shackle straps I'm not sure what you mean by which would be more affected. You will want to go with shackle traps that are the same size if your current equalizer is the same dimensions as the Road Armor. As far as the leaf springs are concerned, they only need to be replaced if they are damaged...
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  • Can I Use the Road Armor Equalizer on my 2018 Heartland Wilderness 2575RKS with 35" Axle Spacing
    Yes. You can use a Lippert Road Armor # LC696740 on your 35" spaced axles on your 2018 Heartand Wilderness 2575RKS. Depending on the dimensions of your existing equalizer, you may need longer shackle straps; typically this application requires using a 3-1/8 shackle link like the Shackle Strap - 3-1/8" Long # TRSL313 for axles that are 35" apart. If you want to replace the bolts in your system you can use the Zinc Shackle Bolt with Locknut for Double-Eye Springs - 3" Long # TRFA73Z916DLNZ...
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  • Replacement Suspension Bolts For A 3,500lb Axle
    Hey Corey, Bolt grades for leaf spring suspensions can range from grade 5 to grade 8, with the consensus being that grade 8 is the most preferred. For a 3,500lb axle the Zinc Shackle Bolt with Locknut # TRFA73Z916DLNZ would be a compatible replacement. When removing the old bolt and installing the new bolt I recommend using a second wrench to make sure the head of the bolt doesn't spin as these have splines to help grip the bolt hole.
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  • Recommended Shackle Bolt For Escort Trailer
    The shackle bolt we offer that measures 3-1/2 inches is part # 166079. This is a 9/16 inch diameter bolt and includes the locknut. We do not offer a shackle bolt that measures 9/16 inch x 4 inches.
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  • Will Adding the Lippert Road Armor Raise My Trailer to an Unsafe Height
    We've seen a lot of our neighbors raise their trailer considerably more than 1/2" without adversely affecting handling on their trailers; many of them use spacer blocks or axle flip kits to gain as much as 4 to 4-1/2" of additional clearance. As long as your trailer tows level with your truck, I don't believe that extra 1/2" of height will have the negative effects you might expect. When it comes to adding the Lippert Road Armor # LC696740 to your 2021 Venture Sporttrek 327VIK, these are...
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  • Availability of Tandem Axle Equalizer Kit Like # AP233 But With 6-1/8 Long Equalizer # TREQ356
    We do not offer a tandem axle trailer equalizer kit like # AP233 that includes 6-1/8-inch equalizer # TREQ356. However, you can order the individual parts equivalent to a kit. Shackle straps (2-1/4-inch) are part # TRSL225; Shackle Bolt with Locknut is part # TRFA73Z916DLNZ.
    view full answer...
  • Gaps Between Shackle Bolt Heads and Shackles on Double-Eye Trailer Suspension
    For a 9/16 inch shackle bolt such as # TRFA73Z916DLNZ you will want 65 to 95 foot pounds of torque. Provided that you are within that range you won't over-torque the nuts. A little bit of play is expected but large gaps could be taken up using washers. The spring eye does need to be able to move though so it can't be sandwiched between the shackles too tightly.
    view full answer...
  • 9/16 inch Diameter Shackle/Spring Bolt Options for Boat Trailer
    9/16 inch diameter shackle and leaf spring bolts are the standard size for trailer suspension so that would be what you'd need for your boat trailer. The part # TRFA73Z916DLNZ that you referenced is this size like you will need and also is galvanized like you wanted which will help prevent corrosion. Another really great solution is the part # 126B2 which has a zerk fitting on the bolt head which allows you to easily grease the bolt and bushing to prevent corrosion as well.
    view full answer...
  • Replacement Leaf Springs for 3500 Pound Axle
    For a double-eye leaf spring supporting at least a 3500 pound axle, the closest leaf springs I have to what you have requested is the, # e59SR spring, 23-1/8" - 3500 pound, # e54SR spring, 25-1/8", 3500 pound, Dexter # 072-017-00 spring, 21" - 2000 pound. One option may be to cut the hangars from the current location and move them to fit an available spring size. If that is the case, you could use the Leaf Spring # e59SR spring measuring 23-1/8" eye center to eye center. (A longer...
    view full answer...


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Info for this part was:

Employee Mike L
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Mike L
Employee Michael H
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Michael H
Employee Jameson C
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Jameson C
Employee Jeffrey L
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Jeffrey L
Employee Zack K
Video Edited:
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Employee Lindsey S
Written by:
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Employee Jeff D
Installed by:
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Employee Wilson B
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