AutoTight®
Take-Up Devices
Designed to eliminate slack between the threaded rod and the bearing plate at reaction points.
Zero Play
With a left-hand multi-lead thread, the AT advances smoothly as the building shrinks and settles.
Reliable
With a fully concealed torsion spring, the thread is less vulnerable to jobsite debris.
Application
AutoTight TUDs are designed to eliminate slack between the threaded rod and the bearing plate at reaction points
Moving Parts
As a building shrinks the AT torsion spring rotates the stud of the device, automatically tightening the connection
Accommodation
TUDs are expansion rated from 1.10” – 2.50”. TUDs may be stacked to double the expansion to 5.0”
Strength
Made from T6 6061 aluminum, ATs are tested and rated per ICC ES-AC316 for high loading. ATs are rated up to 83.2 Kips
AutoTight® Take-Up Devices
| MODEL NUMBER | ROD DIAMETER | MATERIAL | O.D. | HEIGHT | RATED TAKE-UP | ALLOWABLE LOAD | DELTA R | DELTA A |
|---|---|---|---|---|---|---|---|---|
| AT4A-1.5 | 1/2″ | ALUMINUM | 1-1/2″ | 3.00 | 1.50 | 6,450 LBS | 0.000* | 0.011 |
| AT4A-2.5 | 1/2″ | ALUMINUM | 1-1/2″ | 4.06″ | 2.50″ | 6,450 LBS | 0.000″* | 0.011″ |
| AT6A-1.5 | 3/4″ | ALUMINUM | 2-1/8″ | 3.19″ | 1.50″ | 10,550 LBS | 0.000″* | 0.011″ |
| AT6A-2.5 | 3/4″ | ALUMINUM | 2-1/8″ | 4.19″ | 2.50″ | 10,550 LBS | 0.000″* | 0.011″ |
| AT8A-1.5 | 1″ | ALUMINUM | 2-3/4″ | 3.50″ | 1.75″ | 20,050 LBS | 0.000″* | 0.004″ |
| AT10A-1.5 | 1-1/4″ | ALUMINUM | 3-1/4″ | 3.50″ | 1.62″ | 28,050 LBS | 0.000″* | 0.021″ |
| AT12A-1.5 | 1-1/2″ | ALUMINUM | 3-1/4″ | 3.50″ | 1.62″ | 28,050 LBS | 0.000″* | 0.021″ |
| AT16A-2.0 | 2″ | ALUMINUM | 4″ | 3.5 | 2.07″ | 39,450 LBS | 0.001″* | 0.011″ |
AT4A-1.5
Fits up to 1/2″ Threaded rod
AT6A-1.5
Fits up to 3/4″ Threaded rod
AT8A-1.5
Fits up to 1″ Threaded rod
AT10A-1.5
Fits up to 1-1/4″ Threaded rod
AT12A-1.5
Fits up to 3/4″ Threaded rod
AT16A-2.0
Fits up to 2″ Threaded rod
