The starter base collar is connected at one of the many bases i.e., base plate, screw jack or swivel jack and provides a base rosette to begin Scaffold construction.

Use: screw a starting base for a scaffold. It has an adjustable height to allow for compensation on uneven levels, so that a level scaffold is always attainable. Any scaffold base should always be placed atop mudsills that are on proven solid ground.
Standard Hollow Galvanized Screw Jack used in Cuplock and Ringlock Scaffolding.

Use: screw a starting base for a scaffold. It has an adjustable height to allow for compensation on uneven levels, so that a level scaffold is always attainable. Any scaffold base should always be placed atop mudsills that are on proven solid ground.
Standard Hollow Galvanized Screw Jack used in Cuplock and Ringlock Scaffolding.

The screw jack is used as a starting base for a scaffold where the supporting surface of the scaffold is on a slope. This Galvanized Swivel Base Jacks is the standard screw leg for Cuplock and Ringlock Scaffolding.

Scaffolds Supply's Frame Screw Jacks have a solid 24" threaded stem welded to a fixed Base Plate. Screw Jacks allow for individual leveling of each leg to ensure a level working platform on uneven terrane. This Jack works with Frame Scaffolding (#6 & #7 tube), as well as system scaffolding like RingLock or CupLock (1.9"Ø)

• 24" overall stem length, 18" adjustable stem length
• Notched 6" from the top to prevent over-extending & the nut from coming off
• Acme Threads
• 5" x 5" Welded on Base Plate
• Electroplated for longevity & rust prevention

Adjustable U-Heads are used for supporting the beams in concrete slab support.
Scaffolding U-Head is sometimes referred to as Fork Heads