The CONFAST Hex Head Concrete Screw can now be purchased online and direct from the manufacturer. This easy-to-install screwworks wells in concrete, brick or block, and is designed for indoor, dry applications.
CONFAST Hex Head Concrete Screws, often called “blue screw” due to their blue coating that helps to resist rust, are designed to be used when the screw head can protrude above the surface of the item being fastened. This application allows for the option to remove the screw.
HOLDING STRENGTH
· The CONFAST hex concrete screw are considered a light duty fastener in both in the 3/16" diameter and 1/4" diameter.
· Holding values increase based on the depth of embedment, providing that minimum and maximum embedment requirements are met.
· The holding values differ based on the base material into which the CONFAST hex concrete screw has been installed.
SIZES
· To determine the size of The CONFAST hex concrete screw required for a specific application, consider the size of the hole in the fixture, the thickness of the item being fastened and the weight of the item.
· The 1/4" diameter holds slightly more weight than the 3/16" 1 CONFAST hex concrete screw.
· The minimum length of screw require for any job is determined by adding the thickness of the material to the minimum embedment depth of 1".
· The maximum length CONFAST hex concrete screw is equal to the thickness of the material being fastened plus the maximum embedment depth of 1-1/4".
· The length of screw measured from under the head
· Features a hex slotted washer head: 3/16” diameter needs a 5/32” hole and 1/4” diameter needs a 3/16” hole
· Special threads for efficient dust removal
INSTALLATION
· A hole must be drilled in the base material before the CONFAST® hex concrete screw is driven into the base material.
· When driving the CONFAST hex concrete screw, the threads of the screw taps threads into the base material. Always drill the hole slightly deeper than the screw will penetrate.
· Each diameter of CONFAST hex concrete screw requires a specific diameter of hole, and the hole must be drilled using a hammer drill and a carbide bit.
· For minimum holding values, the screw’s minimum embedment in the base material is 1" and the maximum embedment is 1-3/4"
· A 1/4" hex nut driver is required for the 3/16", and a 5/16" hex nut driver is required for driving the 1/4" CONFAST hex concretescrew.
