hexagonal wrench
61allen key — /ˈælən ki / (say aluhn kee) noun one of a number of variously sized, small, hexagonal metal bars bent to form a right angle, the ends of which may be slotted into the matching recess in the heads of grub screws or certain bolts so as to tighten… …
62cap screw — /ˈkæp skru/ (say kap skrooh) noun a bolt with a cylindrical head which is turned by a wrench designed to fit into the hexagonal recess in the head …
63hex screw — /ˈhɛks skru/ (say heks skrooh) noun a screw with a hexagonal head that can be tightened with a wrench …
64drain plug key — A tool for removing and tightening drain plugs, e.g., on transmissions and engine sumps, either as a multi purpose tool with a number of different drives in the form of hexagonal or square projections at either end for different drain plugs, or… …
65lag bolt — noun a heavy woodscrew with a square or hexagonal head that is driven in with a wrench • Syn: ↑lag screw • Hypernyms: ↑woodscrew * * * noun Etymology: lag (VI) : lag sc …
