Ideal for fastening cement board to wood, the CB3BLGHL114S Cement Board Screw from Simpson Strong-Tie features alternating high-low threads. This screw has a #9 gauge and is 1-1/4" long with a #3 undersized square drive.
A C-3 mechanically galvanized coating offers corrosion resistance on this cement board screw, and the small wafer-head allows for countersinking. Part of the CB3BLGHL series of screws, this plastic-collated screw is compatible with the Quik Drive PROLDH Underlayment/Backerboard System. The screw is ANSI A108 compliant.
WARNING: California residents, this item qualifies for Proposition 65 legislation.