SERRATED FLANGE HEXAGON NUTS. Hexagon Nuts with Serrated Flange. M8 8mm 17.9mm 13mm 7.6 - 8mm. M4 4mm 10mm 7mm 4.5 - 4.8mm. M10 10mm 21.8mm 15mm 9.6 - 10mm. M6 6mm 14.2mm 10mm 5.7 - 6mm. High quality A4 marine grade nuts made toDIN 6923 standards.
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