screw anchor
Drywall mounting hardware
A screw anchor is a fastener designed to grip materials that won't hold ordinary screws well.
In drywall, plastic or metal screw anchors expand when a screw is driven in, creating a secure hold: Use screw anchors for hanging heavy mirrors.
In construction, larger screw anchors—helical steel shafts twisted into the ground—support foundations, decks, or retaining walls.
Shaped like a coil
- foundationUnderlying support structure
- soilGround matter for planting
- earthSoil or electrical grounding
- underpinningFoundational support beneath
tieback · load-bearing · caisson · shoring · retention · excavation · drilling · torque
Resistance to deformation
- solidityFirmness of structure
- load-bearingSustaining structural mass
- durabilityResistance to wear
- robustnessResistance to failure
strength · rigidity · permanence · steadiness · resistance · secure · displacement · settlement
helical
Shaped like a coil
- foundationUnderlying support structure
- soilGround matter for planting
- earthSoil or electrical grounding
underpinning · tieback · load-bearing · caisson · shoring · retention · excavation · drilling · torque · installation
firmness
Resistance to deformation
- solidityFirmness of structure
- load-bearingSustaining structural mass
- durabilityResistance to wear
robustness · strength · rigidity · permanence · steadiness · resistance · secure · displacement · settlement