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CURT 40066 trailer ball (2 in ball, 1 × 2-1/8 in shank, 6,000 lb)
What are the dimensions of the CURT 40066 trailer ball? · Modern device · basis: Manufacturer specifications (Lippert (CURT))
Also called: curt 40066, 2 inch trailer ball dimensions, 2 hitch ball 1 inch shank, 2 inch ball size mm, 2 ball coupler fit, trailer ball shank size, 2 inch hitch ball cover, hitch ball sizes chart, bola de remolque 2, Kugelkopf 2 Zoll, bola de engate medidas
Exact dimensions. True size, with no printing tolerance added.
- length
- 50.8 mm
- width
- 50.8 mm
Notes
- CURT part 40066 is a 2 in trailer ball on a 1 in diameter × 2-1/8 in long shank, rated 6,000 lb GTW.
- Ball and shank sizes are from the product title; rise, flat size and thread are not published.
- Ball-mount hole must match the shank diameter; shank length must cover the mount thickness plus washer and nut.
- True size, no printing tolerance added. Only published numbers are used; anything not published is said so.
CURT 40066 trailer ball size chart
| dimension | value |
|---|---|
| Ball diameter | 2 in (50.8 mm) |
| Shank diameter | 1 in (25.4 mm) |
| Shank length | 2 1/8 in (53.97 mm) |
| Gross trailer weight rating | 6,000 lb |
| Finish | Chrome |
| Part number | 40066 |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| Lippert (CURT) | CURT 2" Trailer Ball (1" x 2-1/8" Shank, 6,000 lbs.) #40066 | web | Publisher's page; dimensions are facts |
Free files
★ Free files 2 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
| curt-trailer-ball-40066-ball | Ball Ø50.8 mm | STEP · STL |
| curt-trailer-ball-40066-shank | Shank Ø25.4 × 53.97 mm (collar, rise and thread not published, not modelled) | STEP · STL |
https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.Plain text: sheet.txt · JSON: /api/geometry?object=curt-trailer-ball-40066

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Questions
What size is CURT trailer ball 40066?
2 in ball (50.8 mm), 1 in × 2-1/8 in shank (25.4 mm × 53.97 mm), 6,000 lb.