ITEM NAME:165pcs Stainless Steel Nylon Insert Locknut Assortment Kit M3 M4 M5 M6 M8 M10M12.M8 15pcs. M4 35pcs. M6 25pcs. M5 30pcs. M3 45pcs. These nylon inserted lock nuts can be used anywhere this size is needed. The bolt threads into the nylon material are located at the top of the nut.
