opening die

opening die

[′ōp·ə·niŋ ‚dī]
(mechanical engineering)
A die head for cutting screws that opens automatically to release the cut thread.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Today, except to reconsider Freytag's complicated anti-Semitism, it is difficult to imagine anyone, even most literary scholars, cracking that book's nearly 900 pages, much less slogging through the six volumes of Die Ahnen (1873-81), opening Die verlorene Handschrift (1864), or perusing Freytag's multi-volume non-fictional treatments of German history, although they were all once nearly as popular as his first novel.