Nyloc Nylon Insert Locking Nuts A4 Stainless Steel M3 M4 M5 M6 M8 M10 M12 DIN985. Hexagon nyloc nuts with a self locking nylon insert. M12 x 1.75mm pitch; 19mm spanner size. M3 x 0.50mm pitch; 5.5mm spanner size.
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