A steel nail with a mechanically deformed shank, often threaded helically, having a countersunk head and a blunt diamond point.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved
A steel nail with a mechanically deformed shank, often helically threaded, having a countersunk or casing head and a blunt diamond point.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.