The story
From Allen, the name of Allen Manufacturing Company, and bolt.
Etymology from Wiktionary, CC BY-SA 4.0.
Allen bolt
Today it means: A bolt whose head has a hexagonal socket. Full definition →
Today it means: A bolt whose head has a hexagonal socket. Full definition →
From Allen, the name of Allen Manufacturing Company, and bolt.
Etymology from Wiktionary, CC BY-SA 4.0.