GRK Fasteners 5914122 2900 Piece R4 Countersink No. 9 x 2.5 in. Multi-Purpose Screws Yellow Zinc

Recessed Star Drive: zero stripping, with 6 points of contact||CEE Thread: enlarges hole to reduce splitting||W-Cut(TM): low torque, smoother drive||Zip-Tip(TM): no pre-drilling, faster penetration