Submitted by György Chityil ... on Sat, 01/20/2018 - 00:57 Hierarchy: NounDescription: {{context|Construction}} A fastener that taps and drills its own hole during application.Ngram: self-drilling screwNgram Text: self-drilling screwSource: WiktionaryIssue: 0Wiktionary tag: constructionNgram Count: 2