4Crawler Offroad Products

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D-Ring Anchors

fits 1986-2002 Toyota pickup/Hilux/4Runner/Hilux Surf and T-100

1995.5-2004 Tacoma models, likely Tundra

Jeep Wrangler

Will replace standard in-line 2-bolt tow hooks on many import and domestic vehicles

Designed and manufactured in the USA by Visual Diagnostics LLC

Contents:

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D-Ring Anchors D-Rings/Anchors 3rd gen 4Runner D-Ring Anchor - Tacoma Pickup

Introduction:

Most Toyota pickup, Hilux, 4Runner, Hilux Surf, Tacoma and similar models include either a tow hook or some sort of factory anchor point bolted to the underside of the front of the frame rail. These were typically used to secure the vehicle for shipping from the factory to the point of sale. However, for use in vehicle recovery in off-road use, these anchor points may be less than ideal. Tow hooks are usually nice and strong, but with the hook facing downwards, the tow strap or rope often slips out of the hook if you release the tension on it. The other style of factory anchor point is usually just a piece of steel with a hole in it. It is likely only rated for holding a vehicle down to the floor of a ship, but not for yanking the vehicle out of deep mud or off a pile of rocks.

But now there is a convenient bolt-on solution for a secure recovery point. We now have a D-ring anchor that will bolt up to the factory threaded holes under the frame rail. These D-ring anchors are machined out of billet steel and designed to exceed the strength of the 5/8" (16mm) D-ring anchor shackle they are designed to work with (pin diameter 3/4" - 19mm) as well as 3/4" (19mm) anchor shackles with 7/8" (22mm) hole diameter. We can also custom drill the anchors to fit 7/8" (22mm) shackles with 1" (24mm) diameter pins as well as a custom chamfered anchor for the popular 3/4" soft shackles. The added chamfer around the hole reduces wear and tear on the soft shackle material by eliminating the sharp edge, photo comparison.

The anchors are machined of billet steel, a full 1" thick and weigh a massive 2.5 pounds (1.13kg). It's hard to give a load rating on the anchors. They are designed to be at least as strong as the mounting bolts. That is, the anchor should stay intact if the pair of mounting bolts were to shear off. A conservative rating for that is approx. 95,800N or 21,400 lbs. The big unknown is what is the rating of the nuts welded inside the frame rail on the vehicle. Then on top of that you have the rating of the D-ring shackles, that are typically 3-1/4 ton in the 5/8" (16mm) size.

Fit:

These anchors are not made specifically for a given vehicle. Instead, they are designed to make use of standard 2-bolt tow hook mounting holes common on many truck and SUV frames. You can use the following dimensions to check if these anchors will fit on your vehicle. The anchors require a flat area of frame around the two mounting bolt holes about 2-7/8" (73mm) long with the two 12mm mount bolts spaced 1-3/8" (35mm) apart. The anchors are 1-3/4" (44mm) tall where the bolts attach them to the frame and 2-3/4" (70mm) tall overall in front where the D-ring attaches. You can measure the clearance around your factory tie down hook holes to see if these anchors will fit your vehicle. Toyota does use a hole spacing that is comparable to standard aftermarket tow hooks, so these D-ring anchor may fit other vehicles, although the bolt thread may be different, for example 1/2NC or 1/2NF thread on US vehicles. So be sure and check your frame for suitable flat area and height around the frame mounting bolt holes. If you need different size hardware, you can select the hardware size in the order forms. The default bolt length is 3-1/4" or 80mm which is enough to fit through the anchors and into the frame mounted nuts. You could also use these with drilled holes where you can fit a nut on the back side. Likewise, if you want to use a larger d-ring shackle, we can drill out the hole to a larger diameter, up to 1". Drop us a note for a custom quote.

Factory solid axle Toyota trucks (1985 and older) may have clearance issues with the front spring hanger bolts and trucks with solid axle swaps might have clearance issues with spring hanger gussets, so be sure and check for adequate clearance. Minor cutting and/or grinding of the D-ring anchors may be required in those situations.

If you want to check fitment against your vehicle, see the above dimensions for the anchor block and compare those to the existing holes in the underside of your frame. These anchors also have the same hole spacing as common tow hooks, so if you want to replace a tow hook with a D-ring anchor, this is the part for you.

YouTube videos:
https://youtu.be/jAUz2FaWR4w
https://youtu.be/4Bwjwq62KUE

Anchor Shackle Dimensions:

Note that anchor shackles are specified by the nominal diameter of the "bow" or D-ring part, the screw pin will normally be a larger diameter.

. . . .
Screw Pin Anchor Shackle Dimensions A B C D
S = 1/2" 0.625" 1.88" 0.81" 1.31"
S = 5/8" 0.750" 2.38" 1.06" 1.69"
S = 3/4" 0.875" 2.81 1.25" 2.00"
S = 7/8" 1.000" 3.31 1.44: 2.28"

These are inch dimensions shackles. For metric shackles, the pin diameter should be 19mm and the throat width 26mm.

You'll notice column C is the "throat" of the shackle, that needs to be at least 1" to fit over the anchor block. Column A shows the diameter of the pin and thus the diameter of the hole in the anchor.

We also can supply screw pin anchor shackles to go with the anchor blocks for a complete recovery setup. Note that anchor shackles are a forged steel part and have a hot dipped galvanized finish. Both these processes can lead to a rough finish that may impeded fitting over the precision machined anchor blocks. We check and correct the fit of the shackles to the anchors including filing off any flashing/roughness inside the "C" opening to fit over the anchor blocks. We also clean up any roughness on the pin and threads to allow it to fit through the hole in the anchor block.

The D-ring shackles, 5/8" (16mm) nominal diameter, have a screwed in pin which lets you insert the pin through the anchor and screw it securely into the shackle to lock the shackle to the anchor. With the loop of a tow strap inserted in the body of the shackle, this gives you a secure attachment point for the front of the vehicle that can't come apart. Yet, it is easy to unscrew the shackle pin to remove the shackle and strap after use without having to worry about a knot getting too tight.

The anchors are conservatively rated at 10,000 lb. / 5 tons / 4545kg. working load limit. The limiting factor will be the mounting bolt holes in the frame.

For larger D-rings, it's a simple matter to drill out the existing anchor hole to accommodate the larger anchor pin. If you lack the tools to do this operation, we'll be happy to drill out the hole to 7/8" or 1" dia. for a cost of $7.50/hole. Note that the diameter of the shackle pin is typically 1/8 (3mm) larger than the nominal size. Contact us for details. Custom drilled anchors can be ordered below.

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Ordering Information:

The new and improved D-Ring shackle anchors are sized to fit both 5/8" and 3/4" forged shackles out of the box and also a new soft shackle version. Also the new anchors are now available ready to paint as we've had many customers request custom colors to match their trucks. We've had numerous customer requests for custom colors and that was hard to do with the original powder coated versions. Also, the powder coating made refinishing after modifications problematic.

Known to fit

Mounting bolts:

These D-Ring anchors are proudly designed and manufactured in the USA.

Shipping: