What is the difference between these various spacecraft pyrotechnics?

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The following terms have been used in various Space Exploration StackExchange questions and answers. What are the differences (if any) between these various terms?

detonating cord
detonating fuse (as in mild detonating fuse)
explosive bolt
frangible nut
igniter
initiator (as in NASA standard initiator)
squib

terminology
explosives
pyrotechnic-fasteners

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asked Jun 18, 2021 at 4:10

DrSheldonDrSheldon

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What is the difference between these various spacecraft pyrotechnics?

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