T bolt

T bolt

[′tē ‚bōlt]
(design engineering)
A bolt with a T-shaped head, made to fit into a T-shaped slot in a drill swivel head or in the bed of a machine.
References in classic literature ?
Joe, with his bite still in his cheek, "I Bolted, myself, when I was your age - frequent - and as a boy I've been among a many Bolters; but I never see your Bolting equal yet, Pip, and it's a mercy you ain't Bolted dead."