... 4. Galvanized steel or stainless steel nut washer flat washer , bolts nuts washers , nut washer ·Detail Specification:Octopus offers fasteners ... and other you can chooseType of Nut: Square, Hex, Flange, Hex socket, Coupling, wheel, acorn, tapper, and so onType of ... Washer: Round, Square, Plat, Friction, Plate Specifications:Bolts & Nut Item No.SizeBolt ...