The Nautical Encyclopedia

Patterson’s Illustrated Nautical Encyclopedia — Howard Patterson, 1891

⚓ The Superstition Locker ⚓

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Home ⚓ Letter S ⚓ Screw Box

Screw Box

Naval

The thread into which the breech-plug screws when the breech is closed.

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The Nautical Encyclopedia (1891) is in the public domain; this digital edition © 2026 PhotoOpAI.