Standard A-Frame Trailer Jack Mounting Holes

Question

Question:

What is standard A-frame mounting? What are the the bolt hole widths from center to center??

asked by: Ed G

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Expert Reply:

The bracket for mounting a jack on a A-frame trailer has a bolt pattern of 3 inches. The bolt holes may be different sizes which is why you'll see the slotted holes on a jack like # EJ-3520-BBX. This is the standard pattern for nearly all A-frame trailers.

The slotted holes in the # EJ-3520-BBX are 1 by 7/16 inches.

expert reply by: Charles S

0

Answer 1

Hello Jorge, thanks for reaching out. The etrailer Electric Trailer Jack #e55ZV should work great on your 1979 Airstream Excella 500. It uses a standard bolt pattern (3" apart on center) so as long as you can confirm this matches the current…

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Answer 2

Hey Jimmy, welcome back! The etrailer Electric Trailer Jack item #e55ZV has the standard A-frame jack mounting bolt pattern of 3" on center. The mounting bracket has slotted holes so there's some wiggle room too. The outer tube diameter is…

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Answer 3

Hello Bruce, yes it can. The etrailer Electric Trailer Jack #e55ZV can be rotated to the size and the bolts will still line up. We have this jack on one of our trailers here at the shop and I have checked and verified it can be rotated.

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Answer 4

The jack mounting hole pattern on the Electric A-Frame Trailer Jack #EJ-3520-BBX is a standard pattern used for tongue jacks so you need not work about compatibility. Some tongue jacks use a triangular mount like yours while other use a round plate,…

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Answer 5

I measured this jack, Item #TJBB-2001-B, in our warehouse. It measures 15-3/4 inches from the footplate to the top of the outer tube. It measures 17-1/2 inches from the footplate to the top of the jack when the handle is folded in. I've attached…

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Answer 6

You are correct that welding steel to aluminum is a tricky process best left to experienced welders, but if your issue is that you jack sometimes scrapes on the ground you can avoid the need to weld by simply bolting on a swivel jack. Pull Pin Swivel…

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Answer 7

A side mounted jack that you could pivot up and out of the way for better ground clearance would work just fine. The A-frame location is convenient but in a situation like yours you certainly could go with the side mounted style. For that something…

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Answer 8

The mounting hole dimensions of A-frame jacks are a standard 3 inches apart on center, so you will need to weld your new jack on. I highly recommend the etrailer Round, A-Frame Jack #TJA-5000S-B, which has a 5,000 lb capacity and will give you…

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Answer 9

The etrailer and Pro Series A frame jacks will use 3/8 inch bolts, which is the standard size for A frame jacks and couplers. For install details and some product demonstration videos, click the provided links.

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Answer 10

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 11

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 12

According to Blue Ox, it'll take an experienced installer about 4 to 5 hours to complete the installation of their #BX1128 Base Plate Kit on a 2016 Jeep Grand Cherokee. The install isn't what I'd call super-difficult, but the installation…

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Standard A-Frame Trailer Jack Mounting Holes

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