Encyclopedia · Fuzes, primers, and ignition

Fuze plugs and adapters

A fuze plug or adapter is the fitting seated in a projectile's fuze hole that holds the fuze and threads it to the shell. Plugs were of wood, metal, or brass.

Also known as: fuze plug, fuze adapter.

FunctionHolds the fuze in the projectile's fuze hole
MaterialsWood, iron, zinc, or brass
FitThreaded or driven into the fuze hole

Seating the fuze

The fuze plug or adapter was the fitting that held a fuze in the fuze hole of a shell. A paper or metal time fuze was driven into a plug, while threaded adapters received screw-in metal fuzes, matching the fuze to the size and thread of the projectile's fuze hole.

Plugs and adapters were made of wood, iron, zinc, and brass, and a surviving plug in a shell, or the empty threaded seat, is part of how a projectile's fuzing is identified.

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