Our standard compression springs are manufactured according to DIN EN 15800 grade 2. The springs are right-hand wound, the end coils are closed and ground from a wire thickness of 0.5mm and up. The springs are not preset, i.e. they can be slightly longer than "Lo" before pressing on block for the first time. More than 1000 compression springs, made of patented drawn spring steel, or stainless material 1.4310, are available from stock.