Dexion Slotted Angle Fixings are needed to bolt the various angle sections together once they have been cut to the required length. Simply apply through the various provided slots in the angle sections to build strong frameworks. Packs of 50 x M8 nuts or 50 x 16mm length M8 Set Screws Bright zinc plated finish To calculate the number of nuts and screws needed, simply multiply the number of corners and joints by three. Please note: when applying fixings to type 140 or 160 slotted angle sections it is recommended that corner plates are also used to ensure a rigid structure - two plates for every corner