What Size Bolts For Mounting etrailer 2 Swivel Jacks e34RV?

Updated 03/16/2026 | Published 03/10/2026

Question:

Bolt size for mounting

asked by: Jim W

Expert Reply:

Hey Jim, thanks for reaching out. The swivel mount that comes with the # e34RV jack uses M12 bolts. I grabbed one of the mounts from our warehouse to check, and it looks like it comes with M12 bolts, nuts and lock washers, so you shouldn't need to purchase any additional hardware.

I see you already ordered the jacks from us. Did yours not come with hardware?

expert reply by: Jesse M

etrailer 2 Swivel Jacks w/ Bolt-On Mounting Plates - Sidewind - 10" Travel - 3,000 lbs
(click to enlarge)

Edward L.

3/14/2026

To Jim, I got this double set of jacks because the original was in the middle of the A frame area of the trailer. I could not lower my tailgate at all! But before I got the dual set I had another etrailer jack on one side of ththat A frame area which appeared to put more lift on that side. That jack failed on me last year, which is why I got the double to have lift on both sides. I did bolt on because I had no welder. I still think that would have made more sense to do it that way. It’s a little trickier to deal with cranking up or down , but not too bad. I use big blocks of wood to reduce cranking distance. So far these jacks can handle the load easily! I don’t think I can show photos unless it was in my review! Edward L