The electric lamp has a lamp vessel having a pinch mounted in an outer envelope by means of a clamping member of metal sheet which is present on the pinch. The clamping member has an open loop which extends in a direction transverse to the broad side faces of the pinch. A still open clamping member, when present around the pinch, can easily be fastened by plastically deforming a specified region of the member by the method of the invention.