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Adjustable Structural Supports Since 1951.

6x6 Screw Jack

  • Ellis MFG SJ-6 Screw Jack 6x6
  • Jack Post screw jack used with 6x6 lumber for adjustable support
  • barn support screw jack, building jack, floor support jack post
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  • 6x6 screw jack supports ceiling on Alcatraz - Ellis Manufacturing
  • SJ-6 Screw Jack Supports Second Story of House
  • SJ-6 Screw Jack Supports Second Story of House close up
  • SJ-6 Screw Jack Supports Second Story of House close up finished
  • SJ-6 Screw Jack Supports Second Story of House Finished
  • Screw Jack support jack post shore, structural adjustable support
$86.25
per SJ-6

The Ellis 6x6 Screw Jack attaches to 6x6 lumber and provides 6" adjustment for building a fast and reliable adjustable support. It's bulky steel design allows contractors to safely support loads up to 30,000 lbs.  Use as permanent or temporary support in commercial concrete construction and structural repair jobs that require heavy duty long lasting support jacks.  

Availability: In Stock


Item #

safe load capacity

type of finish

Weight

Price

SJ-6

30,000 lbs

Painted Finish

22 lb

$86.25

SJ-6G

30,000 lbs

Galvanized Finish

22 lb

$93.75


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Product Overview

The Ellis 6x6 Screw Jack is engineered with heavy gauge - high quality steel to yield high strength and longevity.  Our products are tested in extreme load situations to determine ultimate load capacity, however; for safety, load ratings on our site include a safety factor of 2.5 to 1 (or better)!


Demonstration Video



Ellis Screw Jack 6x6 Specifications:

adjustable screw jack support jack post shoring concrete formwork and structural repair.
  • 30,000 LB Safe Load Capacity!
  • For Vertical / Horizontal Support in permanent or temporary commercial construction, trench shoring and collapse rescue applications.
  • Galvanized or Painted Finish.
  • Use Standard with Dressed 6x6 Lumber (5x5" Sq.), cut square to any length.
  • 15-3/4" Overall Height (screwed down).
  • Full 6" Adjustment with 1.75" dia. acme threaded screw with 4 threads per inch.
  • Simply turn the "U" Shaped Handle to Adjust Height of Screw Jack. Lift up to 1800 lbs by hand or 4000 lbs. with a 2"x4"x6' piece of lumber placed between screw and handle for extra leverage.
  • Screw is Greased for easy tuning and to prevent rusting.
  • Base Plate swivels independent of the screw and 4 3/8” diam. holes are provided to secure it to a solid foundation.
  • Properly brace as required to prevent lateral shifting
  • Screw Jack is equipped with a safety lock.  Tighten safety lock with a 6mm Allen Wrench once final adjustment has been made to prevent accidental height adjustment to jack post.
  • 6x6 Heads are available for securing vertical 6x6 to horizontal beam: Purlin Splicer, Joist Holders, Pivoting, Reshore Spring.

*Caution, the acme screw of the 6x6 GALVANIZED Screw Jack will completely separate from the acme nut if screwed out too far. Do not extend the acme screw past the maximum adjustment of 6". This will insure that the threads of the acme nut will be used to support a heavy load.  For maximum safe load capacity to be obtained, Ellis Screw Jack should be used with a 4x4 lumber cut to at least 5.5" long and subject to support straight loads only. We recommend tightening set screw in the side of the Screw Jack with a 6mm allen wrench prior to loading. Before construction begins it is recommended that you consult with certified structural engineer for approval of our products within your application.


Product Drawings

SJ-6


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