Simpson CSD25300 1/4" X 3" Countersunk Head Split-Drive Anchor - Zinc, Pkg 100 Slotted Hex Blue Concrete Screws no secondary tightening step

no secondary tightening step

The Strong-Drive TB is built for one job: fastening wood to steel without babysitting the connection

these headed anchor bolts feature a forged anchor head that eliminates the need for a traditional hook or bend while providing reliable holding strength in cured concrete

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

Simpson CSD25300 1/4" X 3" Countersunk Head Split-Drive Anchor - Zinc, Pkg 100 Slotted Hex Blue Concrete Screws no secondary tightening stepThe 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