Home/minerallac/Product/3/8 X 6-1/2, Wedge anchors, also known as expansion bolts and expansion anchors, are four-piece anchor assemblies that secure themselves using a mechanical wedging effect at the end of the fastener.
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3/8 X 6-1/2, Wedge anchors, also known as expansion bolts and expansion anchors, are four-piece anchor assemblies that secure themselves using a mechanical wedging effect at the end of the fastener.

Reference : 62297