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Youyikoo

4x4 Screw Jack Post,Adjustable Floor Jack 12" - 16" Height Range,24700 lbs Max Load Capacity Lumber Jack,Temporary House Jacks for Leveling Crawlspace,Basement Shore Beam Foundation Repair(1 Pack)

Condition: New
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$39.99
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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Oct 31
Order within 10 hours and 28 minutes

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At a glance

Condition
New
Color
4x4-1 Pack
Model
YYM666N
Weight
10 lb
Material
Iron
Vehicle Service Type
no limit
Load Capacity
24700 lb
In the box
Basement Floor Jack

Features 5

  • Extreme Load CapacityThis heavy duty support jack With up to 24700 lbs of safe load capacity House Jacks for Leveling Crawlspace is a perfect solution for sagging floors, foundation issues, stabilize joist, additional support in crawl spaces, attics, ceilings, decks, staircases, wood, steel, concrete beams and stabs
  • 4*4 Screw jackFit for 4x4 post lumber. Range of adjustment: 12" - 16". Top plate dimension: 4" x 4". Load capacity: up to 24000 lbs depending on the timber. This adjustable floor jack fits most common applications with ease
  • RED COATED surface This Basement Floor Jack is made of heavy-duty steel for good load carrying capacity. The surface has a red oxidized coating that prevents rust and corrosion, guaranteeing durability and stability during use
  • Easy to OperateAdjusting the height of the FloorJack is a breezejust rotate the lever. Quick and easy! Plus, the lever is removable for easy storage when not in use

Description

Function:The floor jacks provide perfect support for lifting the lumber, which is frequently used in construction renovations and repairs. The jacks are also suitable for basement, stairwells, crawlspace, farm, wall and etc. Specification:Fit for 4x4 square lumber. Range of adjustment: 12" - 16". Top plate dimension: 4" x 4". Load capacity: up to 24700 lbs depending on the timber. Installation：Put 4x4 lumber into the shore jack and secure the lumber with screws. Adjust the height with the metal handle and secure the base plate with the screws. High Quality：The adjustable house jacks are made of high quality alloy steel with black paint coat, which is durable and corrosion- proof. Specification: 100% Brand New Material: Alloy Steel Color: Black Maximum Height: 26" (65cm) Minimum Height: 19" (48cm) Top plate dimension: 4" X 4" Fit for 4x4 inch square lumber Package included: ONE Adjustable Screw Jack Joist Post Wall Jack for Framing

Specs 19

Vehicle Service Type no limit
Material Iron
Load Capacity 24700 Pounds
Maximum Lifting Height 16 Inches
Brand Youyikoo
Brand Name Youyikoo
Manufacturer Youyikoo
Model Number YYM666N

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Oct 31

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Similar Products

Top Amazon Reviews

Good
Color: 4x4-1 Pack
Works great
Reviewed in the United States on December 14, 2025 by Chris
Great for temporary use while replacing porch columns
Color: 1 Pack
Review Image by Steve H. Steve H.
Review Image by Steve H. Steve H.
Review Image by Steve H. Steve H.
Review Image by Steve H. Steve H.
I have a couple porch columns with rotting bases. I am ordering some columns. Once they get here, I will have to swap them out. While doing that, I need a way to safely hold up the porch. This is what I got this jack for. The "normal" use for this jack is as a way to support a floor that is sagging to level it back out. But they work fine as a temporary solution, too. The jack is rated at a max load of just under 10k pounds (9738#) and has a ultimate rating of double that. The base and the top plate have screw holes so you can attach to the surfaces for permanent installation, ensuring no slippage of the unit. Be aware that this is not like a car jack. You control it by spinning the shaft, with the included round bar (or a large screwdriver, etc.) There is only about 4 inches of adjustment range. In the pics, you can see that the top of the jack body is a round metal top, about 3/8" thick. It has a threaded hole in the top that accepts the jack's shaft. The shaft appears to be (I did not have thread gauge large enough to confirm) a M30-3.5 shaft, so about 1-3/16" in diameter. My only concern is that the threads in the jack base seem to be a pretty loose fit to the threaded rod, making it a little wobbly. Another cause for this is that the top where the threaded hole is in only about 9.5mm thick. With a thread pitch of 3.5mm on the shaft, this means there are only 2.7 threads in the top of the jack. For max strength, you would need 1.5 times the shaft's diameter (or 45mm) of thread engagement. Instead, we get 9.5mm. That's only about 20% of the thread required for max strength. Just worried that a really heavy load could tear out the 2.5 threads you get. You'll have to trust the engineer who designed it knew what he was doing. But for me, I will only use for temporary (and less that full-rated) loads. ... show more
Reviewed in the United States on March 16, 2025 by Steve H. Steve H.
Strong and sturdy
Color: 1 Pack
It's helping hold my house up as I type.
Reviewed in the United States on October 6, 2025 by Monica D. Dorner
Easy to Use-- Good Quality
Color: 2 Pack
The floor jacks work very well and are very functional for many different uses. Use the jacks to support the new steps we were placing on the porch-- great for holding them up with installation, also used to replace beams at different places on the porch. They are easy to use and are a perfect solution for safety while installing different items around the house. The jacks adjust easily to either higher or lower your item. Very good value and came in handy! ... show more
Reviewed in the United States on May 3, 2025 by 4BabyBoys
!!!
Color: 4x4-1 Pack
Would be better with bering at bottom plate
Reviewed in the United States on October 25, 2025 by Vic
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