The thesis deals with the design of the production technology of the cap, the volume of which is 700 pieces, for use in low-voltage and high-voltage equipment, including switchboards, for the production of semi-crystalline plastic polyamide 6. The component will be injection moulded into a single layer mould, which will be composed of purchased normals from Meusburger. A KraussMaffei 110-380CX machine will be used for production, which will exert a clamping force of up to 1100kN. The economic evaluation showed that for the specified production run of 700 units, the cost of the part is 479,85 CZK, the price of one piece without the initial investment in the mould and without any depreciation is over 11 CZK