MAGNA-GRIPS MGPB-R8-20G-PKT - RIVET,BUTTON,1/4 IN DIA,.312 GRIP,PK10 - BLIND RIVET, HEAD TYPE STRUCTURAL BUTTON, RIVET MATERIAL STEEL, MANDREL MATERIAL STEEL, RIVET DIA. 1/4 IN, GRIP RANGE .312-1.125, HOLE SIZE .261-.272, HEAD DIA. .475-.525, HEAD HEIGHT...