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It's a special nut found more commonly on early model Fords, Jeeps, IHs & very few GM trucks as it is only found on "external" hubs. The nut system contains 4 parts:
- Keyed washer
- Wheel bearing nut
- Keyed, index (with holes or slots) washer
- Drag Shoe Nut
There's two types of Drag Shoe Nuts
- Smaller diameter - Auto-Matic hubs
- Larger diameter - Lock-O-Matic hubs
Each uses the same keyed washer (#1) & wheel bearing nut (#2)
The Auto-Matic hub's DSN has four 1/8" diameter holes in its face, two of which are threaded, each of which contain a full dog point set screw that receives either a 1/16" hex bit or allen wrench. This uses an index washer that has holes in it. To lock the nut in place, one hole must completely receive a set screw.
The Lock-O-Matic hub's DSN has five 1/8" diameter holes in its face, three of which are threaded, each of which contain a full dog point set screw that receives either a 1/16" hex bit or allen wrench. This uses an index washer with slots in it. To lock the nut in place, at least two slots must completely receive a set screw.
The unthreaded two holes in either nut, receive a pinned spanner wrench/tool. The tool is used to tighten/loosen the nut. These nuts had a short life due to people being ignorant to their design & beating on the nut with a chisel and hammer, while the set screws were still seated. Sometimes the set screws' holes have been found to be marred so badly, that a 1/16" allen wrench can't be used to even feel around to see if there's still a set screw in the hole!
When uninstalling, you unthread the set screws completely and thread them back in three or four threads so you don't accidentally use the threaded holes with the tool... which is hard to do considering the threaded holes are the only two that are a perfect 180° apart. Then you spin the nut off... if you don't have the $175 tool, or the $10 tool that came with the hubs/service kit, you can make one out of a set of channel locks or a Cressent Wrench. Drill 1/8" holes in the head of the pliers or wrench and insert a 1/8" needle, roller bearing in each hole. Open pliers/wrench to the correct size and there you have it.
Upon Installation, the keyed washer is installed, then the wheel bearing nut (torqued to specs - usually 40 foot pounds) and then the index washer, flat side out. The set screws are threaded into the beveled face of the DSN until the dog points are almost flush with the interior face (flat) of the nut. Then the DSN is threaded on and torqued to specs.
What else can I help you with?
How can I properly install a screw into an inset screw hole?
To properly install a screw into an inset screw hole, align the screw with the hole and gently turn it clockwise using a screwdriver until it is securely in place. Be careful not to overtighten the screw, as this can damage the material around the hole.
What is the hole into which a screw is inserted called?
The hole into which a screw is inserted is called a pilot hole. This hole helps to guide the screw into the material and prevent it from splitting or cracking. It also makes it easier to drive the screw in.
How can I fix a stripped screw hole?
To fix a stripped screw hole, you can use a larger screw, fill the hole with wood glue and toothpicks, or use a screw repair kit.
How do you put a wood screw in a hole that the screw just spins?
by makin a new hole
How can I repair a stripped screw hole in wood?
To repair a stripped screw hole in wood, you can fill the hole with wood filler or a wooden dowel, then re-drill a pilot hole and insert a new screw. Alternatively, you can use a larger screw or a screw anchor to secure the wood.
How can I fix a loose screw hole?
To fix a loose screw hole, you can try using a larger screw, filling the hole with wood glue and toothpicks, or using a wooden dowel to create a new anchor point for the screw.
Is there a solution if the screw hole is too big for the screw to fit properly?
Yes, there are solutions for a screw hole that is too big, such as using a larger screw, filling the hole with a filler material, using a wall anchor, or using a screw sleeve or bushing to provide a tighter fit for the screw.
What is the area called that the screw goes into The part with the ribs like that you screw the screw down into...?
The hole that you put a screw into is referred to as a "tapped hole". The rib-like things in the hole are called "threads" or, more specifically, "internal threads" as opposed to the external threads on a screw.
Is the hole too big for the screw to fit properly?
Yes, the hole is too big for the screw to fit properly.
How can I fix a stripped wood screw hole?
To fix a stripped wood screw hole, you can fill it with a wooden dowel or toothpicks coated in wood glue. Once the glue dries, you can reinsert the screw into the hole.
How can I fix a screw hole that is too big?
To fix a screw hole that is too big, you can use a wooden dowel or toothpicks to fill the hole. Simply insert the dowel or toothpicks into the hole, cut off any excess, and then reinsert the screw. This will provide a tighter fit for the screw and secure it in place.
What is the best method for filling a screw hole with screw hole filler to ensure a seamless finish?
The best method for filling a screw hole with screw hole filler to ensure a seamless finish is to first clean the area around the hole, apply the filler using a putty knife, and then sand the area smooth once the filler has dried.
