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

2-5/16" Hitch Ball - 1" Diameter x 2-1/4" Long Shank - Chrome - 10,000 lbs

2-5/16" Hitch Ball - 1" Diameter x 2-1/4" Long Shank - Chrome - 10,000 lbs

(3928)

$25.41

2-5/16" Hitch Ball - 1" Diameter x 2-1/2" Long Shank - Stainless - 8K

2-5/16" Hitch Ball - 1" Diameter x 2-1/2" Long Shank - Stainless - 8K

(241)

$56.86

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

Gwendolyn Y

SC30-C

SC30-C
(click to enlarge)

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Product Page this Question was Asked From

2-5/16" Hitch Ball - 1" Diameter x 2-1/4" Long Shank - Chrome - 10,000 lbs

2-5/16" Hitch Ball - 1" Diameter x 2-1/4" Long Shank - Chrome - 10,000 lbs

(3928 reviews)

Code: C40007

Retail: $32.95

Our Price: $25.41

Trailer Hitch Ball
Trailer Hitch Ball
Standard Ball
Chrome-Plated Steel
10000 lbs GTW

2-5/16 Inch Diameter Ball
2-1/4 Inch Shank Length
1 Inch Diameter Shank
CURT

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