... ) Thickness: 0.4-0.7mm 3)Width:4-8mm Starter spring/Springs for starter assy of engines1) Material: 62Si2MnA2) Thickness: 0 ... , diesel oil , electrical machine ,start-up machine,etc.),constant force spring for door ,windows ,electric fans ,machines of lift and down ... springs are widely use all kinds of home appliances uesed auto recover of wire (ie. Vacuum Cleaner, electric cooker, Electric drier ...