Model NO.: F436/F436M Material: Carbon Steel Combination Washer Packaging: All Inclusive Diameter: M8-M76 Surface Treatment: Black,H.D.G Hot Forging: Yes Transport Package: 25kg/Carton 900kg/Pallet Origin: Ningbo, China Type: Flat Gasket Combination Washer Structure: A Type Spring Washer Type: Standard Raw Material: Carbon Steel,Stainless Steel Port: Ningbo or Shanghai Trademark: SD Specification: F436/F436M HS Code: 731822000