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Related to wing screw: wing bolt
wing screw[′wiŋ ‚skrü]
A screw with a wing-shaped head that can be turned manually.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
A screw having a wing-shaped head, designed for manual turning without a driver or wrench.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.