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screw anchor

   Also found in: Wikipedia 0.01 sec.
screw anchor
An anchor (similar to an expansion bolt) having a metal shell with a screw along its central axis; when the shell is placed in a hole and the screw is driven in, the shell expands, tightly securing the anchor in the hole.


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The Helix Pier System is based on the principal of turning a screw anchor into stable subsoil until the necessary load capacity has been achieved, spacing them at proper intervals to support the weight loads specific to the structure.
If that''s not possible, you can literally tie the structure down using heavy duty screw anchors driven into the ground at all for corners and a rope harness over the building.
Distributed through the nationwide network of the Specialty Tools & Fasteners Distributors Association (STAFDA), drywall houses, and building-supply distributors, the Pro-Twist line includes: drywall screws, light gauge steel fasteners, self-drilling screws, self-drill steel framing screws, heavy gauge metal to metal fasteners, concrete screw anchors, cement board and fiber cement board screws, drywall nails, acoustical fasteners, and wood-working fasteners.
 
 
 
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