Product Name: Double Spring Lock Washer, Double Split Lock Washer, Spirng Washer Model NO.: ASME/ANSI B 18.21.3 Spring Washer Type: Heavy Combination Washer Packaging: All Inclusive Combination Washer Structure: A Type Material: Carbon Steel Type: Spring Washer Transport Package: Bulk or Carton Specification: Railway Washer Origin: China HS Code: 7415210000 Product Description Spring lock washer: This kind of washer on the pic is made according to drawing.Materialsteel, stainless steel, copperMakingOEMPaymentL/C, T/T, D/P, Western Union, Paypal, Money Gram,FOB Shanghai or NingboOrigin placeRuian,ChinaWe can produce from the size that buyer need. The Material of it on the PC is steel the material can be stainless lteel, steel or copper. We can make according to buyer's drawings or samples or standard. It is double floors, different with general ones.