Ring-grooved rivet, hold-down plate bolt, uncorked self plugging rivet, closed self plugging rivet, twin-drum self plugging rivet, drawn type self plugging rivet, large-cap self plugging rivet, drive rivet, grooved type self plugging rivet, drawbench type self plugging rivet, blind rivet nut, stud, plastic rivet, different colorful rivets, wall nail, chipboard screw, hexagonal bolt, nut, different standard pieces and non-standard pieces. Materials are steel, copper, aluminum, stainless steel and alloy steel.