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Buyers Products 5/8" Forged D-Ring With 4-Hole Integral Mounting Bracket

Buyers Products 5/8" Forged D-Ring With 4-Hole Integral Mounting Bracket

Item # 337B40MP
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Buyers Products Tie Down Anchors - 337B40MP
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Bolt-on 5/8" forged D-ring spreads the pull to the entire mounting plate instead of concentrating it on a single point. Bolt-on design means you don't have to weld, so it's great for surfaces like wood where welding is not an option. Lowest Prices for the best tie down anchors from Buyers Products. Buyers Products 5/8" Forged D-Ring With 4-Hole Integral Mounting Bracket part number 337B40MP can be ordered online at or call 1-833-496-1390 for expert service.
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Buyers Products Tie Down Anchors - 337B40MP

  • D-Ring
  • Tie-Down Cleats and Rings
  • Surface Mount - Bolt-On
  • Trailer Tie-Down Anchors
  • Truck Tie-Down Anchors
  • Buyers Products

Bolt-on 5/8" forged D-ring spreads the pull to the entire mounting plate instead of concentrating it on a single point. Bolt-on design means you don't have to weld, so it's great for surfaces like wood where welding is not an option.


  • 4-Hole mounting bracket helps spread pull force to multiple anchor points
  • Versatile uses across many applications
    • Works on flat wood or metal surfaces
  • Corrosion-resistant black powder-coated finish
  • Strong forged steel construction
  • Includes required mounting hardware: 4 carriage bolts and 4 nuts
  • Made in the USA


  • Working load limit: 6,130 lbs
  • Ring diameter: 5/8"
  • Inner dimensional height: 3"
  • Inner dimensional width: 3"
  • Carriage bolt length: 2-1/4"

  • B40MP 5/8 Inch Forged D-Ring with 4-Hole Integral Mounting Bracket

    Video of Buyers Products 5/8" Forged D-Ring With 4-Hole Integral Mounting Bracket

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

    Video Transcript for Buyers Products Forged D-Ring With 4-Hole Integral Mounting Bracket Review and Installation

    Hi everyone. Adam with Today we're going to be taking a look at the buyers products D link mounting bracket. So these are going to be ideal for a new trailer or old trailer. Whether you're just making it a custom tie down point for whatever you may be hauling. My ranger here, I like to tie it down in the center on the front and back.

    So that's what I went ahead and did. Just put it in the middle of my trailer. Just to get everything kind of centered and tied down.But if you have a car or even a golf cart, lawn equipment, whatever it is, you can actually place these wherever on your trailer. Just to make a custom fit to whatever you may be hauling. So this is going to be a more heavy duty bracket.

    It is going to get you about 8,000 pounds of weight capacity, and also it's going to have a working load limit of 6,130 pounds.It's all made of forge steel. And we're going to have about a five eighths of an inch diameter on this ring here. And it's going to have a width of three inches and a height of three inches. The bracket itself does have four different tie down points. So that's going to spread out all that pole strength, just to make sure it's going to spread all that out.

    So you're not going to be pulling your floor up very easily.We are going to have a dimensions of about five and seven, eighths inches by five and seven eighths inches. This is going to be kind of a bigger plate. But that's what gets it that larger weight capacity. And from the bottom of our plate here, to this little ridge where our dealing sits in there. It is going to be about an inch and three quarter inches.So yes, the more heavy duty bracket does stick up a little bit, compared to some of the recessed tie down points.

    But it's definitely going to be able to quadruple the capacity of some of these recessed tie down points.I honestly say it's not going to be that big of a deal. That it isn't nice and flush. Because there's no sharp edges here. It really isn't going to damage any of your tires or equipment you may have. So one thing I do like about the buyer's products de-link tie down bracket, is the fact that it's powder-coated. It's going to look nice and it's not going to end up like some of the bare metal ones that we have here. Over time, t's just natural. They're just going to start looking a little bit more worn down.It doesn't really affect the performance of them, but I honestly want my trailer to look as nice as the day that I put it all together. So the hardware is included with the kit. And they are going to be about two and a quarter inches long. So if you have a more thicker floor, you might have to go to the hardware store and pick up some longer bolts.So as you can see here, we really didn't even get to the nylon part of the nut. Just because we do have some two by fours on our floor here. So if that's the same situation you guys have, definitely recommend going ahead and grabbing a little bit longer bolts. Just so you can thread that through and catch them more, a couple more threads.So my opinion if you're building a trailer or replacing the tie down points on your current trailer, I would suggest just kind of over specking everything. Yeah, it's an 8,000 pound tie down point. My side by side probably doesn't need all of that, but I just rather have the more heavy duty stuff on my trailer. Just in case they get in those situations, where I might need it. And they're all really easy to install just four little bolts.So let's just go ahead and do that now. So the first thing we want to do is find the right spot for a new tie down points. And this point, we are actually going to replace our existing tie-downs. So that's the place we're going to put it. We could do this in many different ways. We can get a, maybe like a paint marker and kind of mark these. Make sure we're going to get them drilled out properly. And in the right spot. You can do it that way, or I do is just kind of, center it up the best you can.And just give yourself a little drill mark. Now I can remove this and finish drilling our holes.Go ahead and make sure all the holes line up. Seems good to go. And we're going to take our included hardware, put it down in there. And this little square part here, is going to prevent it from turning. So if you have it where it's just kind of sitting up like this, rotate it down so it sits flush with that plate.So now we can go ahead and put our plate on the back. And we are going to get a nylon lock down with our kit. And just go ahead and thread it on by hand. A couple of turns. And you can either do the brackets this way or this way. I'm just doing it this way, just cause I'm going to connect these two boards of wood. We are going to use a nine sixteenths inch socket, to tighten these down.Well everyone, that's just about it on our buyer's products. The D-ring mounting bracket.

    Customer Reviews

    Buyers Products 5/8" Forged D-Ring With 4-Hole Integral Mounting Bracket - 337B40MP

    Average Customer Rating:  4.7 out of 5 stars   (42 Customer Reviews)

    Bolt-on 5/8" forged D-ring spreads the pull to the entire mounting plate instead of concentrating it on a single point. Bolt-on design means you don't have to weld, so it's great for surfaces like wood where welding is not an option.


    Added these in the bed of my truck to have hooks and theyre beefy and were easy to install in my truck and the lower plates really beef it up on the underside as well


    etrailer is one of the best! Great customer service and fast delivery!
    They sent my order out right away Thank you....will do business with etrailer again.
    The D-rings are great. Super strong and it's nice to have the plate and bolts. The old rings put on this trailer had no plates! no support.
    The rings are much bigger than I expected, but will definately hold well


    Brackets are nice and solid. I would imagine the majority of customers would be attaching these to a solid floor - most likely 2" thick, as shown in the installation video. That being said I would suggest sending 2 1/2" bolts with package as the ones sent are worthless.


    I would give these a 5 but the strap metal is a little too soft if you are mounting these around something. They are larger than I expected but seem like they will do a good job.


    The package arrived this morning in perfect condition. All the trailer parts I ordered were just as I hoped they would be, very heavy duty in perfect condition. I would not hesitate ordering from this company again.


    Sturdy construction, but as other reviews have pointed out, the bolts are about 1/2 inch too short. Kind of annoying to have to buy new hardware to make it work. My package was also missing a nut.

    The carriage bolt length measures 2 & 14 inches long and the plate with hook itself measures half inch thick. Customer Service will reach out to you about the missing nut.
    -- Etrailer Expert Sierra K - 12/30/2021


    Not wanting to weld on my new trailer, I purchased these instead. Using the included backing plates, you will need a half inch longer bolts to go through a 2x6 floor. Installation was very simple. I would have given 5 stars, but had to purchase longer bolts. Overall, a very fine product.


    Very well made, it’s heavy duty. I installed a total of six, four for the cars and two for the motorcycle. I’ve this car hauler trailer for fifteen years, this is the best tie downs that I have installed. I also purchased the ratcheting straps, excellent product, even comes with a nice carry bag.


    Bolts that come with it are too short to go thru 1 1/2" treated lumber on trailer floor. Plates are too thick to use with these bolts!

    Thank you for your review. The hardware measures 2-14 long and the plate itself measures 12 thick.
    -- Etrailer Expert Heather A - 06/03/2021


    These are great, heavy duty and versatile in setting up my 18 foot car hauler. I have several cars to move from a 66 El Dorado to a 2002 Corvette. Placement will be easy as they are flush mount with backing hardware and rated for more weight than I'll ever need.


    Bought this for a trailer I use to transport my ATV. Works well


    I was impressed as always quick turnaround times and quality products.


    Mounted on the rear floor edge of my side x side trailer. I have a chain attached to the D Ring & then drops over the trailer ball on my machine. Absolutely no way the machine can go forward in a panic stop situation. Great piece of mind while in motion. I purchased a WLL of three times the weight of the machine. I can always trust E Trailer to have exactly what I need for towing.

    Still in service keeping my 1500 lb Honda in place for 2500+ miles.
    Douglas R - 10/27/2020


    Super heavy duty! Works great for strapping down all my toys


    Product is good but had to purchase extra bolts due them being to short


    This ring was mounted on the front of my 7x12 trailer, through the wood floor and through the metal frame. I use the ring to pull my 1800 lb stump grinder onto trailer when it broken. I use it a lot and it works perfectly! is my number one go to when trailer parts are needed . Also purchased a really nice class IV trailer hitch for my ‘04 Jeep Wrangler. Fit perfect, easy one person install. Works great! If Dena don’t have it, you don’t need it.


    Excellent product, I installed 6 of these on my car hauler, four for the cars, and two on the sides for the motorcycles. They are very well constructed, I had to purchase longer bolts since they weren’t long enough for the floor boards. Definitely would recommend, should also get the strap kit etrailer sells, it comes with a very nice zippered bag, you will be all set to haul anything safely.


    This thing is a monster, very strong and yet takes up minimal space.


    The D rings are exactly what I wanted and what I ordered. Unfortunately they are very heavy. They were packed in a very thin cardboard box which was completely destroyed when it was delivered. The D rings were packaged in plastic bags which were all ripped up and 2 nuts and bolts were missing. Considering the way they were packaged and shipped missing 2 sets of bolts is pretty good.


    I ordered and received 4 of these Harvey duty D rings. Shipping was quick and I couldn’t be more please with them. They were a little bigger than I expected, but I was totally find with it cause the quality is awesome!! Etrailer sells good quality stuff. I have bought several items from them and I am always pleased with what I receive. Thank you trailer for your great products and your great customer service.


    super fast and easy to deal with


    Appears to be heavy duty as expected and fast shipping.


    Easy installation, very well built prod uct


    These are easy to install and are very sturdy...would work for any atv/utv...customer service is great also...prompt responses...would use E trailer for all my trailer needs


    Show More Reviews

    See what our Experts say about this Buyers Products Tie Down Anchors

    • What Is The Distance Between The Mounting Holes On The Buyers Products 5/8" D-Ring 337B40MP?
      The mounting holes on the Buyers Products 5/8" Forged D-Ring With 4-Hole Integral Mounting Bracket # 337B40MP you were looking at are 5" apart on center as shown in the included diagram. I included a video of Adam installing the # 337B40MP on a trailer for you to take a look at.
      view full answer...
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    • Size and Grade of Hardware Included with Buyer's Products 5/8 Inch Forged D-Ring Tie-Down 337B40MP
      The 4 bolts included with the # 337B40MP are Grade 5, 3/8-16 x 2-1/4 inch, fully threaded. The back support bars are a nice feature that will prevent tear-out.
      view full answer...
    • What is the Capacity of Buyers Products 5/8 Forged D-Ring 337B40MP
      The Buyers Products 5/8" Forged D-Ring # 337B40MP has a working load limit of 6,130 pounds. The break strength data was not provided. Usually the working load limit is a third of the break strength but again the exact figure is not provided. The capacity will also depend on what you have the D-ring mounted to. So for example if mounted to a steel frame you will likely be able to reach the WLL capacity. Attached to 1/2 inch plywood, not so much.
      view full answer...
    • Dimensions of Mounting Brackets of Buyers Products Forged D-Ring
      The mounting brackets of the Buyers Products 5/8" Forged D-Ring With 4-Hole Integral Mounting Bracket # 337B40MP that you referenced are 6 inch by 1 inch. I would recommend using these on the other side of your truck bed when attaching these to a truck bed's floor.
      view full answer...
      Image 1 for
    • Does Buyers Products 5/8" Forged D-Ring # 337B40MP Have Capacity for Transporting Rock Crawler
      The Buyers Products 5/8" Forged D-Ring With 4-Hole Integral Mounting Bracket # 337B40MP that you referenced has a 6,130 lbs working load limit which would easily be enough for a Jeep rock crawler. Especially when you consider that you'd be using more than one and one by itself would have more than enough capacity.
      view full answer...
    • Carriage Bolt Hole Mounting Dimensions For Buyers Products 5/8" Forged D-Ring # 337B40MP
      The mounting holes on the Buyers Products 5/8" Forged D-Ring With 4-Hole Integral Mounting Bracket # 337B40MP are going to be spread 5" on center. This is the same from the top holes to the bottom holes and from the left holes to the right holes.
      view full answer...
      Image 1 for
    • Frame Mounted Forged D-Ring Tie Downs on Big Tex 70 Steel Car Trailer
      I can absolutely help you and make a recommendation. The floor of your Big Tex 70 car trailer is an 1/8 diamond steel plate. The 1/8 plate will be fine for a tie down point for anything but a car. You need a bracket not to fasten something down tight but to keep your car from moving. The rolling resistance would be too much for an 1/8 plate but sufficient for any type of other loads, like lumber, drywall, trash, pipe etc. You're going to need to drill into the frame to safely secure mounting...
      view full answer...
    • Recommended Trailer Tie-Down Anchor That Is Made In The USA
      I have another option for you, but most of our Tie-down anchors including the Brophy D-Ring Tie Down Anchor w Backing Plate - Bolt-On - 1/2" Wide - Recessed - 1,600 lbs # RR5K are made overseas. For an option that is made in the USA I recommend the Buyers Products 5/8" Forged D-Ring With 4-Hole Integral Mounting Bracket # 337B40MP which has a 6130lb working load limit (WLL) meaning it will be plenty strong for securing your 2000lb tractor. I included a video of the # 337B40MP for you...
      view full answer...
    • Tie Down Anchors Made In USA
      We have the Buyers Products 5/8" Forged D-Ring With 4-Hole Integral Mounting Bracket # 337B40MP which is made in the USA. Most of the Tie-Down Anchors we carry are made overseas but there are a few exceptions with most of them being weld-on only. We also have the following weld-on options made in the USA: Buyers Products 1" Forged 360 Rotating 55 Angled D-Ring With Weld-On Mounting Bracket # 337B52 Buyers Products 1" Forged Steel D-Ring With Weld-On Mounting Bracket - 55 Degree Bend...
      view full answer...
    • Can Curt C45832 Tow Strap Loop Be Used to Tie Down a UTV
      The # C45832 strap loop itself has a 13K capacity, so the strength of this part itself wouldn't be an issue. If the combined capacity of the receiver hitches is greater than the 2370 lb dry weight of your UTV, this would be a good way of tying it down. If the receivers don't have that kind of capacity, I'd use a more traditional tie down setup like a couple of D-rings such as # 337B40MP and two ratchet straps like # BDW20325. You could rig it up as shown in the provided video.
      view full answer...
    • Torklift or Other Product for Holding Camper on a Flat Bed F-550
      I would use the Buyers Products # 337B40MP forged D-rings with brackets in the four locations where they are needed. You could install into metal deck framing, or into typical 2-by lumber materail which itself has been secured to the fram of the truck. Then you could potentially use 4 Cargo Buckle # IMF14069 tie down straps rated for 2200 pounds each. Not only would these hold a camper on the flat bed, but when the camper is out, these parts will help secure other loads. You will need...
      view full answer...

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    Info for this part was:

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    Employee Lindsey S
    Edited by:
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    Employee Adam E
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