NASA NTRS · 19690000282
Countersunk headscrew retainer
Abstract
Pin locking technique for flush fasteners retains a screw under dynamic conditions when self-locking or lock wiring devices are not practical. Spring pin is counter sunk through one side of the screw head into the component to form a flat surface.
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Totah, R. S.. 1969-08-01. Countersunk headscrew retainer. https://ntrs.nasa.gov/citations/19690000282
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