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
