Features Countersunk blind rivets have 2 parts: the rivet and the mandrel. The mandrel can be discarded once the rivet is set. Blind Rivet Type / Open End Drill Size / #30 Grip Range / 0.063 in to 0.125 in Head Dia. / 0.236 in Head Height / 0.039 in Hole Size / 0.129 to 0.133 in Mandrel Material / Steel Rivet Body Material / Aluminum Rivet Dia. / 1/8 in Rivet Head Style / Countersunk Rivet Length / 0.256 in Rivet Number / 42 Single Shear Strength (Lbs.) / 171 Tensile Strength (Lb.) / 220 Core / Solid