Bright zinc plated (BZP). Hexagon Full Nuts – Zinc Plated Steel – DIN 934. These are the standard, most commonly used hexagon nuts. M7 5.5mm 1.0mm 11mm. M8 6.5mm 1.25mm 13mm. M12 10mm 1.75mm 19mm. M4 3.2mm 0.7mm 7mm.
This product would be ideal for applications requiring precision hex screws, bolts, or nuts in the metric or standard screw sizes used in the M4 to M30 range.