SPAX 4581820700635 1/4 x 2-1/2" T-Star Drive Washer Head Black HCR (High Corrosion Resistant) (Exterior) Powerlag Screw (50 Pieces per Box): Amazon.com: Industrial & Scientific
Spax Wood Screw Set, Full Thread + Torx Bit, 6 Sizes: 3 x 20, 3 x 30, 4 x 35, 4 x 45, 5 x 30, 5 x 40 mm, A2 Stainless Steel: Amazon.com: Industrial & Scientific