stainless steel structural monobolt rivetmaterial: stainless steel ( A2)Dia: 4.8mm ( 3/16), 6.4mm( 1/4)head: Protruding head.surface: polish,Cr3+ZincSize: 4.8* 10 mm, 4.8*14mm, 6.4*14mm, 6.4*20mmProduct Feature* multi-grip capability* high shear and tensile strength* good sheet take-up performance* visible lock for quick and easy inspection* excellent hole fill via rapidly expanded body* stem mechanically locked into body* wide choice of installation tools* one fastener can be used to replace several standard grip fasteners* reduced fastener inventory and simpler stock control* compensates for irregular,oversized,slotted or misaligned holes* can stop sheet movement in non-standard holes* large gap closing capability* provides very strong,vibration resistant joints* no damage,electrical problems or rattling due to loose stemsProduct application:* Automitive * Cabinets and enclosers (containers)* Commecial vehicles * Domestic appliances* Heating and ventilatingAssembly material:* metal to metal * metal to plastic