What is the standard size ball for a gooseneck trailer?Īll gooseneck trailers manufactured in the United States have a 2 5/16” ball size. Standardized tow ball sizes allow for easier coupling and towing.
These measurements refer to the diameter of the trailer ball. The only thing you need to pay attention to is weight capacity. All U-Haul trailers can be towed using either a 1-7/8 or 2 ball. There are four standard trailer ball sizes: 1-7/8", 2", 2-5/16" and 3". Considering how many different trailers a company like U-Haul has to offer, you would think getting the right hitch ball size and weight capacity would be pretty tricky. The nut size on a hitch ball with a 1-1/ 4 inch shank, like the Tow Ready 2-5/ 16 Inch Hitch Ball, part # 19286, will use a 1-7/ 8 inch socket.Īlso to know is, what size trailer balls are there? One may also ask, what size nut is on a 2 5/16 ball? Most of the 2-5/ 16 inch hitch balls will use either a 1-inch diameter shank or 1-1/ 4 inch diameter shank. The diameter of your ball mount's hole must be no more than 1/16" greater than the ball shank diameter in order to fit. The most common ball size is two inches in diameter, but heavy-duty industrial trailer balls can go up to 2 1/4". Keeping this in consideration, what is the most common trailer ball size? A hitch ball with a 1 inch shank will take a wrench with a 1-1/ 2 inch socket. The nut on a hitch ball with a 1-1/4 inch shank takes a wrench with a 1-7/ 8 inch socket. You can have a 2-5/16 inch hitch ball on either a 1 inch or 1-1/4 inch shank.
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