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barrel bolt, tower bolt

A door bolt which moves in a cylindrical casing; not driven by a key.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
Edgetech countertop saws are designed to cut countertops to size and route drawbolt cavities without any extra handling of the countertop.
952/881-1925 FAX 952/881-0374 CTS730 Miter cuts, drawbolt cavities, Counter Top Saw variable speed.