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What is the Mounting Bolt Pattern of the etrailer Round A-Frame Jack TJA-5000-B?  

Updated 02/17/2026 | Published 06/23/2024

Question:

What is the length of the mounting plate and the center to center dimensions between the mounting holes?

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Expert Reply:

Standard 3". All A-Frame mounted jacks like the etrailer Round A-Frame Jack item # TJA-5000-B, use the same 3" mounting hole bolt pattern. In other words, the mounting holes are a universal size and pattern so that any A-Frame jack will fit into any A-Frame jack mount. As long as your trailer has an A-Frame jack mount, this jack will fit.

I have linked a review video below so you can see the functions of this jack demonstrated.

expert reply by:
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Jerred H
Jerred H. profile picture
Etrailer Expert

Jerred H.

2/17/2026

Hey, did the universal bolt pattern on the A-frame jack line up well with your trailer mount? Knowing how the fit turned out could help others checking their mounting dimensions too.

Mark B. profile picture

Mark B.

2/17/2026

@JerredH The bolt on pattern was spot on. Everything lined up perfectly.

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