square rivets non standard fasteners

square rivets non standard fasteners size : M8*20 surface treatment:blue white zinc plated material:SWRCH-1022A 1.Product:Baosteel raw material make sure the product good toughness and high strength,quality meets the demand of International European Union standards. 2..Application:this kind of product is for fitness equipment-----treadmill,Weightlifting Bed Series,The bench press frame,Barbell bed.ski tools,Cushioning pads of the treadmill 3.we also can give your suggestion