Demand for bolts and nuts material SA 193. Three variants. Bolts SA-193 1st B8T Class 2 2nd B6 3rd B8M Class 2 Nuts SA-194 1st Grade 8T 2nd Grade 6 3rd Grade 8M Screw, Hexagon Head Bolt, DIN EN ISO 4014, M20 X 160    Screw, Hexagon Head Bolt, DIN EN ISO 4014, M20 X 180 Nut, Regular Hexagon Nut, DIN EN ISO 4032, M20 Please give me the price for purchasing 100 pcs of each item and the price for purchasing 500 pcs of each item.