Bit of hardware that prevents a screw from loosening |
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Fastener to clunk discordantly (7) |
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Block nutcase holding fastener (7) |
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Metal fastener screwed on top of another (7) |
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Device for keeping a bolt fastener tight (7) |
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Metal fastener designed to stop accidental loosening |
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Supplementary fastener (7) |
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Security device — not luck (anag) |
The Guardian Quick |
15 Jul 2022 |
Fastener that resists loosening |
Wall Street Journal |
25 Aug 2018 |
Fastener that resists loosening |
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Bar has devotee providing an extra level of security in a tight space |
Irish Times Crosaire |
03 Dec 2016 |
It prevents loosening of hair on head |
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Item for securing hair on head |
The Telegraph Toughie |
19 Aug 2015 |
Sturdy fastener |
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Special sort of fastener. |
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