GRK R4 Multi-Purpose Framing Screws

The GRK R4 Multi-Purpose Framing Screws feature cutting pockets that provide a clean hole, reduces splitting, and bore with precision. They are ESR-3201 Approved for structural applications. The R4 screws are self-countersinking into even the hardest woods. They are approved for exterior or interior use. Ideal for use in plastic, cement fiber board, sheet metal, wood decking and melamine. These R4 screws are available in multiple sizes and quantities.