Description All tolerances +/- .26mm May also be available in alternate materials. Metric Nylon Hex Nuts Variations Description F H Quote M2 3.9 1.2 M2.5 4.9 1.8 M3 5.4 2.2 M3.5 6.9 2.7 M4 6.9 3 M5 7.9 4.3 M6 10 5.4 M8 12.9 6.4 M10 14.8 9.8 M12 17.74 10.54