uxcell M3x5.5x2mm Zinc Plated Square Machine Screw Nuts 50pcs Thread Size: M3/0.12"; Product Name: Square Nut Material: Zinc Plated(Carbon Steel); Weight: 16g Package Content: 50(+/-2%)Pcs x Square Nut; Main Color: Bronze Tone Height: 2mm/0.08" Width: 5.5mm/0.22"