Simpson HDIA25 Hollow Drop-In Internally Threaded expansion Anchor 1/4" Siding/Fencing/Trim Nails Inverted upper Tri-Lobe Threads -

Inverted upper Tri-Lobe Threads - clear excess material as the screw drives

electrical and plumbing) installations

the HGUS delivers exceptional strength while remaining value-engineered for an economical price

so it does not require a hose or compressor

Predeflected body virtually eliminates deflection due to material stretch

Simpson HDIA25 Hollow Drop-In Internally Threaded expansion Anchor 1/4" Siding/Fencing/Trim Nails Inverted upper Tri-Lobe Threads -Simpson Strong Tie HDIA25 HDIA Hollow Drop In Internally Threaded Anchor is a flush mount expansion anchor engineered by Simpson Strong Tie for attaching threaded rod to support conduit, cables, and lighting in both hollow and solid base materials. The internally threaded design enables secure anchoring into CMU, hollow core plank, brick, normal weight concrete, and lightweight concrete while the flush mount profile and easy bolt removal make it a