The invention relates to a helical compression spring (104), particularly for a torsional vibration damper, comprising a plurality of spring turns spaced apart from one another, which can be pressed together completely when an appropriate load is applied, wherein the helical compression spring is loaded in a fatigue-strength range when a complete-compression load is applied. The invention further relates to a torsional vibration damper, particularly a dual-mass flywheel, comprising an input part (100) and an output part (102) having a common axis of rotation, about which the input part and the output part can be rotated together and can be rotated in relation to each other to a limited extent, and a spring-damper device, which acts between the input part and the output part and which has such helical compression springs arranged in the circumferential direction of the torsional vibration damper.