Available here are Torx\/6-Lobe Pin Button Head Barrel Security Nuts. These Barrel Nuts (also known as Interscrews) are internally threaded parts that are ideal for clamping two pieces of material together when used with machine screws. Ideal for playground equipment, ironmongery and signage to name a few. They ensure maximum security when clamping two materials together. These nuts are manufactured with a 6-Lobe Pin Security Drive and are available in A2 Stainless Steel in a countersunk or button head style. This item is sold in a box quantity of 100. This is not a stock item therefore please allow 3-5 working days for dispatch. As this is not kept as a stock item, this is non-returnable. Click Here to view the installation video. M8 x 16mm - Hafren Torx Pin Button Barrel Security Nut - Box of 100