... need any product of screws, just let me know Closed End Inserts Rivets1.Material:Aluminum/steel,Stainless steel,Copper2.Packing:Bulk ... cannot be damaged by water and are dirt safe for use in electrical circuits, because no fluids can get ... made. MaterialsCrbon Steel/Stainless Steel/Brass ,According your requestSurfacePhos,Zinc,Yellow Zinc,Dacromet,Ruspert,Brass or Black Oxide availablePackingSmall box ...