Simpson HDIA37 Hollow Drop-In Internally Threaded expansion Anchor 3/8" Dovetail Router Bits Laser-Cut Premium-Quality Steel Plate Laser-cut

Laser-Cut Premium-Quality Steel Plate Laser-cut for tight tolerances and stable performance during cutting

Certified welds for confidence in strength and loading performance

What makes this "Premium" version different from a standard EB-TY fastener

Exterior outdoor living structures such as pergolas

Simpson HDIA37 Hollow Drop-In Internally Threaded expansion Anchor 3/8" Dovetail Router Bits Laser-Cut Premium-Quality Steel Plate Laser-cutThe Simpson Strong Tie HDIA37 HDIA Hollow Drop In Internally Threaded Anchor is an internally threaded, flush mount expansion anchor engineered for attaching threaded rod to support conduit, cables, and lighting. Designed for versatility across both hollow and solid base materials, this anchor delivers reliable holding power in CMU, hollow core plank, brick, normal weight concrete, and lightweight concrete all with the convenience of a flush mount