Solid Aluminium Rivets Countersunk Head AN426 , MS20426AN26 rivets are standard, solid shank, counter sunk head aluminium aircraft rivets (also known as MS20426) used for structural aluminium sheet metal work, offering good shear tensile strength for aircraft, race cars and industrial applications. AN426AD rivets are fabricated from 2117 aluminIum and heat treated to the T4 condition. Shear strength of 26,000 PSI and a tensile strength of 38,000 PSI Sold in various size packs. See listing