Which Nut to Use with Buyers Products Hitch Ball # 337RB50MM

Question

Question:

Hello I am planning to buy a Curt 45310 ball mount with a Buyers product RBM 50 MM Ball. I wish to mount the RBM 50 MM ball mount on the Curt 45310. I understand the hole size on the Curt 45310 and the shank dia on the RBM 50 are both 1 1/4 inch but the RBM 50 does not come with a nut. Can you suggest what’s the best way to mount that ball on the Curt ball mount? Does the Curt have a threaded hole that the ball can screw into? Do do I need to have a nut?

asked by: Shobhan M

0

Expert Reply:

The correct nut to use with the Buyers Products 50 mm hitch ball part # 337RB50MM is the part # 337FNE113012063 when you go to mount it on the Curt ball mount # C45310.

expert reply by: Jameson C

0

Answer 1

The Draw-Tite Front Mount Trailer Hitch Receiver, part #65069 is a good fit for your 2008 Jeep Wrangler. I have attached a drawing that shows how the hitch is attached to the vehicle. As you can see, the attach points are on the underside of the…

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Answer 2

In regards to the Draw-Tite Front Mount Trailer Hitch Receiver - Custom Fit - 2", #65069, I have reached out to my contact at Cequent and have some precise measurements for you. Please see the attached picture for assistance. The distance from…

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Answer 3

You can have a 2-5/16 inch hitch ball on either a 1 inch or 1-1/4 inch shank. The nut on a hitch ball with a 1-1/4 inch shank takes a wrench with a 1-7/8 inch socket. A hitch ball with a 1 inch shank will take a wrench with a 1-1/2 inch socket. You…

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Answer 4

We have one standard 50 mm hitch ball that you could use with the Brophy part #EH53C-C but the one you mentioned wouldn't be ideal as the bottom portion of the ball is cut flat like you noticed. The 50 mm size is pretty rare here in the US which…

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Answer 5

You will want to use a dial caliper or micrometer to measure the inner diameter of the hub you have on your trailer to determine what size cap would be needed. Check out the picture I attached that shows this measurement being taken on a hub. I wish…

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Answer 6

The Dexter 8-133 axle according to my contact at Dexter is an old motorhome axle they no longer make. Their tech said the motorhome axles like what you have are designed for one time use so there are not compatible parts made for even replacement…

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Answer 7

We don't have a combo of the Curt Hitch Ball #C40008 and Curt Ball Mount #C45340. The ball mount is extremely heavy-duty, rated up to 17,000 pounds. I think it's safe to assume you don't have a torque wrench rated up to 450 foot pounds…

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Answer 8

You will need a 1-1/2" wrench like part #C20001 in order to install the nut on the 2" Hitch Ball part #63845. A 1-7/8" wrench would be much too large.

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Answer 9

It is possible to mount the springs on top of the axle which is called "flipping the axle". To accomplish this we normally recommend an over-under conversion however there is not one with square u-bolts available for your square axle.…

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