Related Clues:

• Wood connector, often
• It fits into a nut
• Cork follower
• Propeller type
• It may be covered with polish
• Relative of a bolt
• It could be a board member?
• Fastener at the end of a bolt, perhaps
• Finger part
• Manicurist's target
• Twisted fastener
• Digit end
• Spike
• Manicure target
• Ersatz hook