UNI 5588 Hexagon Nuts - ISO Metric Coarse and Fine Threads - Category A Bronze M8 pitch 1,25 - 500 pz. M10 pitch 1,50 (key mm 17) - 500 pcs. M10 pitch 1,25 (key mm 17) - 500 pcs. M10 pitch 1,25 (key mm 14) - 500 pcs. M10 pitch 1,50 (key di mm 14) - 500 pcs.