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A washer with a projection that may be hammered against a flat side of a nut, or into a hole in the surface, or over an edge, in order to secure the nut to the surface on which it bears
« Back to Dictionary IndexA washer with a projection that may be hammered against a flat side of a nut, or into a hole in the surface, or over an edge, in order to secure the nut to the surface on which it bears
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