SCREW - RT COMPOSITE TRIM HD - #8 x 3-1/8" PRO-PAK T10 (GRK #16083) | GRK Fasteners RT Composite Screw, #8 Thread, Reverse Thread, 2.087 in Thread Length, 3-1/8 in Length, Trim Head, Star Drive, T-10 Drive, Steel, Applicable Materials: Wood, 360 lb Shear Strength, 499 lb Tensile Strength