NASA NTRS · 19850000127
Screw-Retaining Allen Wrench
Abstract
Steadying screws with fingers unnecessary. Crimp in uncompressed spring wire slightly protrudes from one facet of Allen wrench. Compressed spring retains Allen screw. Tool used with Allen-head screws in cramped spaces with little or no room for fingers to hold fastener while turned by wrench.
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Granett, D.. 1985-06-01. Screw-Retaining Allen Wrench. https://ntrs.nasa.gov/citations/19850000127
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