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MS20470AD aircraft rivet
MS20426AD aircraft rivet
Standard aluminum aircraft rivets are shown here. MS20470AD-diameter-size. Dimple on top of head indicates that it is a hardened rivet (AD). Hardened are used in structures
MS20426AD-diameter-size shown here.
Mechanic's Toolbox has a rivet tool that has all of the information you need on aircraft rivets and riveting.
Mil Spec        Code        Head design        Material        Application        
MS20470        AD        Universal        2117-T4                General use, medium strength, 26,000 psi, for joining aluminum                
MS20426        AD        100 degree flush        2117-T4        General use, medium strength, 26,000 psi, for joining aluminum                
MS20470        DD        Universal        2024-T4                High strength "Ice Box" rivet, 37,000 psi, can replace 2017-T4                
MS20426        DD        100 degree flush        2024-T4        High strength 'Ice Box rivet", 37,000 psi, can replace 2017-T4                
MS20470        A        Universal        1100                Nonstructural - low strength                
MS20426        A        100 degree flush        1100        Nonstructural - low strength                
MS20470        B        Universal        5056-H32        Magnesium joints                
MS20426        B        100 degree flush5056-H32        Magnesium joints, 24,000 psi                
MS20470        K        Universal        2017-T4                High shear 33,000 psi                
MS20426        K        100 degree flush        2017-T4        High shear 33,000 psi                
MS20426        T        100 degree flush                Titanium                        
MS20470        T        Universal                        Titanium                        
MS20615        M        Universal        Monel                Stainless or inconel joints                
MS20427        M        100 degree flush        Monel        Stainless or inconel joints                
MS20427        ---        100 degree flush        Copper        Nonstructural                
MS20470        E        Universal        7050-T73        High strength, high temperature - Often replaces DD, substitute for 2024-T4                
MS20426        E        100 degree flush        7050-T73        High strength, high temperature - Often replaces DD, substitute for 2024-T4                
NAS1097        AD        100 degree flush                Used on thin skins - not in tension                
NAS1241        100 degree flush        2117-T4        1/64         oversize version of MS20426AD                        
NAS1242                Universal        2117-T4        1/64         oversize version of MS20470AD                
                                                
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