Set of M 3-M 10 aluminum rivet nuts by YATO • Cylindrical flange, knurled, so that it adheres more tightly to the fastened element • Rivet nuts allow you to screw a screw or bolt with metric thread into sheet metal or other materials, where there is no possibility of a thread Composition: M 3- 40 pieces, M 4-35 pieces, M 5- 25 pieces, M 6- 25 pieces, M 8-15 pieces, M 10-10 pieces.