Shield, Expansion

Definition

An expansion shield is a device inserted in predrilled holes (usually in concrete or masonry) that expands as a screw or bolt is tightened within it, used to fasten items to concrete or masonry.

Purpose

The purpose of an expansion shield is to provide a secure anchoring point in concrete or masonry, allowing for the attachment of various fixtures and fittings.

Examples of Use

• Installing handrails on concrete stairs using expansion shields for secure fastening.
• Mounting heavy machinery to a concrete floor with expansion shields to ensure stability.
• Attaching signs or fixtures to masonry walls using expansion shields for reliable support.

Related Terms

• Anchor Bolt: A bolt used to attach objects or structures to concrete.
• Masonry Anchor: A type of fastener specifically designed for use in masonry applications.
• Toggle Bolt: A fastener that uses a toggle mechanism to anchor itself in hollow walls.

Notes

Proper installation of expansion shields involves drilling the correct size hole and ensuring the shield expands fully when the screw or bolt is tightened.

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