Create captive screws for a whole range of fasteners such as Multiblocks and Angle Brackets using the universal Anti-Loss Washers (M4, M5 and M6). Simply place these onto a screw that has been inserted into its through hole and, when the screw connection is dismantled, the screw will be held safely and securely in the through hole of the panel element.Anti-Loss Washer M4, natural - 0.0.627.71

Anti-Loss Washer Anti-Loss Washer
A mounting aid and safety device in one. Note: the thickness of the washer (a) determines the position of the panel element.