Bolt Mounting Dimensions for etrailer Square A-Frame Jack w/ Footplate

Updated 02/11/2026 | Published 07/23/2022

Question:

I am planning to use this Jack on a trailer design project and would like to know if the CAD data is available?? Also I cannot find details for the mounting hole spacing?? Please let me know if this is possible

asked by: Ed Y

Expert Reply:

We don't have CAD data available for any of our products but I can definitely help you out with the mounting bolt pattern on the Square A-Frame Jack w/ Footplate # TJDA-5000S. The holes are 3-1/2" on center with that foremost hole being a little elongated to accommodate slight variances. The 3-1/2" distance is an industry standard.

Attached is a photo showing that distance as well as a review video for you to check out.

expert reply by: Jon G

Bolt Mounting Dimensions for etrailer Square A-Frame Jack w/ Footplate
(click to enlarge)

Courtney

2/6/2026

My bolt spacing is closer to 3" from center of bolt to center of bolt all around. I thought mine was industry standard - (Jayco Octane 2015) Are you sure this is 3.5"? I also measured a friend's small flat bed trailer, also 3" bolt center to bolt center.

Jesse M.

2/6/2026

@Courtney hey Courtney, thanks for reaching out. I just ran out to our warehouse and double checked the bolt mounting dimensions for the # TJDA-5000S jack. I can confirm the measurements in the picture above are accurate. The holes are approximately 3-1/2" apart on center.

Courtney

2/7/2026

@JesseM that’s not great because I just ordered that Jack based on some googling I did that said industry standard is 3” from bolt center to bolt center. You aren’t going through the center are you? I’m measuring from bolt to bolt around the center hole, not through the middle.