How Many Threads Need Need to be Showing Under the Hitch Ball Nut Once Mounted
Updated 02/19/2026 | Published 02/17/2026
Products Featured in This Question
Question:
Looks like after adding sway control bracket RP26003, the end of the shaft/tread of hitch ball C40007 will just about line up with the end of the nut. Is this enough, or should I trade the ball with one that has a longer shaft?
asked by: Fred B
0
Expert Reply:
Hey Fred.
You want at least 2 threads showing under the nut so the Curt ball part # C40007 wouldn't be idea. Brophy part # SC30-C would be a better option. It's 1/4" longer so would give you the few threads you need for the ball to be mounted safely.
What kind of trailer are you towing?
expert reply by:
Gwendolyn Y
0
SC30-C
(click to enlarge)
(click to enlarge)
Product Page this Question was Asked From
2-5/16" Hitch Ball - 1" Diameter x 2-1/4" Long Shank - Chrome - 10,000 lbs
- Trailer Hitch Ball
- Trailer Hitch Ball
- Standard Ball
- Chrome
- 10000 lbs GTW
- 2-5/16 Inch Diameter Ball
- 1 Inch Diameter Shank
- CURT
more information >
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