What Size Studs Does The Terran Industries Trailer Hub and Drum Assembly TX28VJ Have?

Updated 03/25/2026 | Published 03/22/2026

Question:

the ad and details cite both 1/2inch studs and 9/16, which is correct?

asked by: Sterling

Expert Reply:

Hey Sterling, thanks for reaching out. The Terran Industries Trailer Hub and Drum Assembly # TX28VJ has 9/16" studs. I am not sure why our page says 1/2" but I will work on getting that edited. Sorry for any confusion.

The hub fits a standard 5.2L-7K axle with 25580 (1.750" inner diameter) inner bearing and 14125A (1.250" inner diameter) outer bearing.

What kind of trailer do you have? Are you replacing all the hubs or just grabbing one for a spare?

expert reply by: Jesse M

Terran Industries Trailer Hub and Drum Assembly - 7K Axles - 12" Diameter - 8 on 6-1/2
(click to enlarge)

Sterling

3/25/2026

Thank you for the reply Jesse. I have a trailer with 6 lug square tube axles that uses that same spindle spud. I also have 8 lug aluminum wheels that I want to use instead of the rusty crappy 6 lug steelies. I will check my lug hole size but I suspect it can make it work one way ore another. What’s a 16th of an inch amongst friends! Lol

Jesse M.

3/25/2026

@Sterling Haha good one! Yes most 8-lug wheels are made to be compatible with both 1/2"-20 and 9/16"-18 studs so there shouldn't be any problems there. Anyway, glad to help. Don't hesitate to reach out if you ever need anything else!