Plasti-Grip 3-1/2 in. Plastic Masonry Fastener

The 3-1/2 in. Plasti-Grip Plastic Masonry Fastener (PMF) is used to attach 1-1/2 in. to 2 in. rigid insulation or mineral wool to concrete or CMU block. Simply pre-drill a 5/16 in. diameter hole through the insulation into the concrete/CMU, insert anchor and tap flush with a hammer. This anchor provides a fast and efficient way of mechanically attaching insulation.250-pieces per boxNo screws or pins requiredWill not rust or corrodeThermally efficient all plastic design3-1/2 in. length2-3/8 in. Dia headInsulation fastener