hii need hex head SDS screw with neoprene washer blackCategory:ScrewsQuantity:20000 Piece/PiecesTrade Terms:FOBDetails:Standard:DINType:Self Drilling ScrewsHead Code:Hex WasherMaterial:Carbon Steel/stainless steelDiameter:6#-14#Length:1/2-5With Washer:EPDM WasherOEM:Acceptable Show More