Simpson CSD25300 1/4" X 3" Countersunk Head Split-Drive Anchor - Zinc, Pkg 100 Slotted Hex Blue Concrete Screws these screws have been tested

these screws have been tested in accordance with ICC-ES AC233 and are load rated for withdrawal

Versatile Application: Intended for use with 6x6 lumber with a slotted base for adjustable installation

Helps maintain structural integrity of load-bearing walls

building sturdy shelving

Simpson 316 stainless steel ring shank coil siding nails can be used for a variety of applications but are typically used for siding installations

Simpson CSD25300 1/4" X 3" Countersunk Head Split-Drive Anchor - Zinc, Pkg 100 Slotted Hex Blue Concrete Screws these screws have been testedThe Split Drive anchor is a one piece expansion anchor that can be installed in concrete, grout filled block and stone. As the anchor is driven in, the split type expansion mechanism on the working end compresses and exerts force against the walls of the hole. The Countersunk head allows for a smooth surface when attaching wood or light gauge steel to concrete and grout filled block surfaces. Installation: For Common Rafters: Drill a hole in base