CURT 40072 trailer ball (1-7/8 in ball, 1 × 3 in shank, 3,500 lb) — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/curt-trailer-ball-40072/  (sheet CC BY 4.0)
Basis: Manufacturer specifications (Lippert (CURT))
Catalog version: 2026-10-20

Overall (mm): length 47.62, width 47.62
- CURT part 40072 is a 1-7/8 in trailer ball on a 1 in diameter × 3 in long shank, rated 3,500 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.

dimension  value
Ball diameter  1 7/8 in (47.62 mm)
Shank diameter  1 in (25.4 mm)
Shank length  3 in (76.2 mm)
Gross trailer weight rating  3,500 lb
Finish  Chrome
Part number  40072

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Lippert (CURT): CURT 1-7/8" Trailer Ball (1" x 3" Shank, 3,500 lbs.) #40072 — web — Publisher's page; dimensions are facts — https://www.lippert.com/curt-1875in-trailer-ball-1in-x-3in-shank-3500-lbs-chrome-packaged-40072-2020103183

Free files (CC BY 4.0, Xem Studio; STEP + STL, 2 parts): https://xemstudio.com/files/hardware/curt-trailer-ball-40072/index.json
API: https://xemstudio.com/api/geometry?object=curt-trailer-ball-40072