Zoro Select U01210.050.0150 Grade 5, 1/2-13 Hex Head Cap Screw, Zinc Plated. Zoro Select U04114.050.0200 Grade 8, 1/2-13 Hex Head Cap Screw, Zinc & Yellow. Westward 4Lxu3 Impact Socket, 1/2In Dr, 22Mm, 6Pts.