M5 Half Nuts (DIN 439) - A2 Stainless Steel Half Nuts, also known as Jam Nuts or Lock Nuts, are thin nuts that are frequently used in applications where a high thread engagement is required. Half Nuts can be used to hold another Hexagon Nut into position or alternatively can be utilised when a standard Full Nut is too thick for application. These Metric half nuts are made from A2 Stainless Steel which provides corrosion and oxidation resistance. For larger quantities or items not listed, please email and one of our team will provide you with a quotation. M5 Half Nuts (DIN 439) - A2 Stainless Steel