Standard No. DIN127B; DIN7980; JISB1251-2-3; ASMEB18.21.1; BS1802; GB93 and so on
Material 70 #, 65Mn and 60Si2Mn Category spring washer
Diameter of M3-M70 (mm) thickness of 0.6-10.5 (mm)
Twenty years of professional production and marketing standards for fasteners, stampings history and experience tell us: high quality.