M3, M4, M5, M6, M8, M10, M12, M16, M20 & M24 sizes available. Nylon 66 Hex Nuts. Natural coloured Nylon grade 66 Plastic Nuts - new from manufacturer. Nylon 66 is a Polyamide and one of the hardest and strongest engineering grades of Plastic, aswell as being a great source of insulation.
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