https://www.aspenfasteners.com/m2-0-4-din-934-iso-4032-metric-hex-finished-nuts-class-6-steel-zinc-plated/
Hex Finished Nuts M2-0.4 Hex Drive Steel Zinc DIN 934 / ISO 4032 ME014
Buy Online from Aspen Fasteners | Free Shipping | M2-0.4 DIN 934 / ISO 4032, Metric, Hex Finished Nuts, Class 6 Steel, Zinc Plated