Simpson 1/4 x 3 Mushroom Head Crimp Drive Anchor CD25300M PACK:500 Pk they secure bolt in place

they secure bolt in place without a nut for quicker setup and teardown and protect threads from splashing concrete

Install with (30) 1/4 in

Included Bearing 791

Ties up to two #6 (20 mm) rebar rods - handles common concrete construction rebar sizes

Simpson 1/4 x 3 Mushroom Head Crimp Drive Anchor CD25300M PACK:500 Pk they secure bolt in placeThe Simpson Strong Tie Crimp Drive 1 4 in. x 3 in. Zinc Plated Mushroom Head Anchor is an easy to install expansion anchor engineered for use in concrete and grout filled block. The preformed curvature along the shaft creates a built in expansion mechanism that secures the anchor firmly in place, eliminating the need for a secondary tightening procedure and speeding up overall installation. The tamper proof mushroom head profile makes this anchor a