... & strictly quality control Outer diameter10mm~90mmType:spring washer.Main material:carbon spring steel, alloy spring steel, refractory, steel, stainless steel, ... cost.Certification:ROHS and ISO9001.Delivery time:7-15 days after receive your payment.Application:Widely used in ... nuts, square nuts, cap nuts.Washers: flat washers, spring washers, lock washers, structural Washers. square washer, bowl ...