CRL 1/4" x 4" #3 Phillips Flat Head Masonry Screws Quantity:Pack of 100 With this option

With this option

Limitations It is not recommended for concrete and stone expansion joints

and takes the foam with it when wiped away

Industrial Grade Switches

CRL 1/4" x 4" #3 Phillips Flat Head Masonry Screws Quantity:Pack of 100 With this optionComplete Anchoring System for Concrete Block and Brick Each Box Complete with Masonry Drill Bit Available in Slotted Hex Washer or Phillips Flat Head Styles CRL Masonry Screws actually cut into masonry while installing using specially sharp cut threads. They hold strong in concrete, brick or block eliminating the need for expansion anchors, plugs with screws, or power actuated fasteners. Common applications include: Electrical conduit and J boxes;