... .surface finishing: black zinc Product details1.Commodity name: flate washer,lock washer,washer2.material:carbon steel,stainless steel,mild steel, alloys ... ,blue white,nickel,chrome4.MOQ:1000PCSPacking&delivery1.packing details:plastic bag,small box,carton2.delivery details:30days upon receipt of 30 ... -standard fasteners according to drawings or the samples flate washer/lock washer/spacing washer