M5-M12 Reverse Left Hand Thread Nyloc Nylon Insert Locking Nuts A2 Stainless
Nut Size:M5 M6 M8 M10 M12. Pitch：0.8mm（M5）/1mm（M6）/1.25mm（M8）/1.5mm（M10）/1.75mm（M12）. Material:A2 304 Stainless Steel. Nylon nut has a nylon washer which creates friction with the mating threads to prevent loosening.