Cable retaining clip, with M 4 thread for screwing the device duct cover with the GKFM 78-2 cable retaining clip inserted in the device duct base, for the additional requirement to achieve a more secure fit of the cover, the cable retaining clips must be inserted in the duct base at intervals of 0.6 m - 0.7 m, countersunk head screw with slot GKS M4X10 in accordance with DIN EN ISO 2009, made of galvanized steel in accordance with DIN ISO 4042, blue passivated, please order separately. VDE certified! Use for: device duct bases GKU ... DKU ... PGU ... PLU ... GAU ... DAU ... for cover opening: 78 mm Material: stainless steel, 1.4310