rag bolt
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rag bolt
[′rag ‚bōlt] (design engineering)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
barb bolt, rag bolt
A bolt having jagged edges to prevent its being withdrawn from the object into which it is driven.
lewis bolt
1. A bolt with a wedge-shaped end inserted like the shank of a lewis in a hole drilled in a stone and fastened therein by pouring melted lead or concrete into the unfilled part of the hole.
2. An eyebolt similarly inserted and used like a lewis for lifting heavy stones.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.