Replacement Conical Toothed Washer For A 5/8" Bolt

Question

Question:

Where can I purchase the cupped serrated washer the one on mine broke?

asked by: Harold W

1

Helpful Expert Reply:

To replace your cupped serrated washer/conical toothed washer you need Conical Toothed Washer - 5/8"
Item # RP01292010

expert reply by: Shane H

1

Ben

9/2/2026

Do you sell these washers? I can't find this part number on you site.

Jesse M.

9/2/2026

@Ben Unfortunately, we don't carry them anymore. They were discontinued about 3 years ago. We don't carry a substitute at this time, but you should be able to find a 5/8" conical tooth washer at a local auto parts store or hardware store.

Answer 1

The outside diameter of the Conical Toothed Washer, part #RP01292010 is 1-1/2 inches. A 5/8 inch opening will accommodate a bolt up to 15.875 mm. With the tolerances of the washer, the 16mm may fit but i cannot guarantee it.

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Answer 2

Yes, the replacement conical tooth washers #C17314 do indeed have a 3/4 inch inner diameter for use on a Curt weight distribution head.

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Answer 3

Yes, you can. You will need the Replacement Hardware Kit item #RHK. This kit will include all the necessary bolts with proper grades, spacers, nuts, and the fish wire tools you will need to complete the installation. You will want to go where it says…

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Answer 4

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 5

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 6

According to Blue Ox, it'll take an experienced installer about 4 to 5 hours to complete the installation of their #BX1128 Base Plate Kit on a 2016 Jeep Grand Cherokee. The install isn't what I'd call super-difficult, but the installation…

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Answer 7

The OEM prep package consists of 4 "pucks" in the bed of the truck that will allow you to drop in puck style hitches for easy installation and removal, that gives you a completely clear bed when not in use. The B&W Companion OEM 5th…

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Answer 8

Yes, it will work. You'll just need to cut the Lance 6-pin connector out and rewire it into the etrailer Trailer Wiring 7-Way Upgrade Kit w/ Junction Box and RV Style Connector item #e99011. Here are the individual functions of that Lance 6-pin:…

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Answer 9

You will have to go with a sliding hitch to allow the trailer to make tight turns. For a trailer 8 feet wide the only bed length that's going to allow 90 degree turns without a slider is a stationary hitch. That being said you have two options.…

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Answer 10

The main difference between the Curt Trailer Hitch Receiver part #C13416 and the EcoHitch Hidden Trailer Hitch Receiver part #EH97FR is that the EcoHitch has a completely hidden cross tube whereas the Curt cross tube will be visible from the rear of…

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Answer 11

Since wire color codes are NOT universal, we always recommend wiring by function, rather than wire color. If you look at the Trailer Wiring FAQ article I have linked you to, you can see some diagrams showing the proper way to wire a vehicle and…

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Answer 12

If you just need a 4-pin to 7-pin trailer wiring adapter, then you can use part #C57672. This will plug into the 4-pin trailer connector on your brother's vehicle and give him the 7-pin socket for the trailer. Keep in mind, this will only give…

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Replacement Conical Toothed Washer For A 5/8" Bolt

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