1.DIN 74361 spring washer for trucks and trailers 2.OE quality ... trailers such as DAF,IVECO,SCANIA,RENAULT,MAN, MERCEDES-BENZ,VOLVO, INTRENATIONAL,FREIGHTLINER, MACK; BPW,FUWA,FRUEHAUF,ROR,SAF,TRAILOR,TONAR ... system, and to raise the product quality to maximun level. DIN 74361 spring washer