Pack of 330 Bolt, Nut, and Washer Assortment 110 pieces of bolts, 110 pieces of nuts, and 110 pieces of flat washers Corrosion resistant zinc plated steel construction Bolts: M3 x 16mm (25 pcs), M4 x 20mm (20 pcs), M4 x 25mm (20 pcs), M5 x 20mm (15 pcs), M5 x 25mm (15 pcs), M6 x 20mm (15 pcs) Nuts: M3 (25 pieces), M4 (40 pieces), M5 (30 pieces), M6 (15 pieces) Flat Washers: M3 (25 pieces), M4 (40 pieces), M5 (30 pieces), M6 (15 pieces)