one pound box of Aircraft Rivets. Designed to Mil-spec MS20470D5-32. .155 Diameter x 2″ Long. NSN 5320-01-017-4178. 5320-01-017-4178 Features MRC Parameter Characteristics AASB ener Length 1.990 inches minimum and 2.010 inches maximum AASK Head Style Universal AASU Head Height 0.067 inches minimum and 0.077 inches maximum AAZE Shank Diameter 0.155 inches minimum and 0.160 inches maximum AAZF Shank Style Straight AAZG Head Major Diameter 0.296 inches minimum and 0.328 inches maximum CQSX Shear Strength 33000 single pounds per square inch HEAT Heat Treatment T-4 solution heat treated overall MATT Material Aluminum alloy 2017 overall MDCL Material Document and Classification QQ-A-430 fed spec single material response overall SFTT Surface Treatment Anodize overall or chromate overall STDC Surface Treatment Document and Classification MIL-A-8625 mil spec 1ST treatment response overall or MIL-C-5541 mil spec 2ND treatment response overall Get it here and save money. 14237 R2C5