Flange 12- Point screws UNC Screw diam 1" (8 UNC) x 3 1/4 Drawing enclosed Material: ASTM A437 B4B qty: 444 pcs Screw diam 1" (8 UNC) x 3 1/2 Drawing enclosed Material: ASTM A437 B4B qty: 811 pcs Silver Plating , with certificate