Simpson HDIA31 Hollow Drop-In Internally Threaded expansion Anchor 5/16" PACK:50 Pk such as zero-profile countersunk installations

such as zero-profile countersunk installations or suspended ceiling applications

The winged drill point bores a clean clearance hole through the wood layer so the material does not climb the shank during installation - then the wings snap off cleanly as the point contacts the steel

high-performance fixed-clip connector engineered for a variety of cold-formed steel framing applications

(2) HEPA polyester filter cassettes

The HDIASTH50 is designed for use in hollow materials

Simpson HDIA31 Hollow Drop-In Internally Threaded expansion Anchor 5/16" PACK:50 Pk such as zero-profile countersunk installationsThe Simpson Strong Tie HDIA31 Hollow Drop In Internally Threaded Expansion Anchor is an internally threaded, flush mount expansion anchor engineered for attaching threaded rod to support conduit, cables, and lighting. Manufactured by Simpson Strong Tie, this anchor is uniquely designed to perform in both hollow base materials such as CMU and hollow core plank and solid base materials including brick, normal weight concrete, and lightweight concrete,