UNF Nyloc Nuts (Also known as Nylon Insert Nuts, or Lock Nuts)Price includes VAT & Free Fast Delivery Various Sizes and Pack Quantities Available. Please choose from the drop down menu. Nyloc nuts with a nylon insert.Nylon insert within the nut grips the male thread and helps prevent loosening. Manufactured to DIN985 Grade 6 steel, bright zinc plated.
eBay