GRK 16105 RT Composite Trim Head Screws, #9 x 3-1/8" KFY9V_CU220

Product details:

Reverse thread design prevents mushrooming for a clean finish. Engineered for use in exterior applications including classic composite trim and decking, chlorinated PVC trim and moulding. For use in all applications including pressure treated lumber. RT Composite Trim screws are self-tapping eliminating the need to pre-drill, features W-Cut threads for reduced torque, and coated with Climatek for superior corrosion resistance.