セルフアップネジ

noun

captive screw

A screw designed to remain attached to a panel or component even when loosened, preventing loss. Technical term used in hardware and electronics.

wasei-eigo (Japanese-coined English), from self up

• このパネルにはセルフアップネジが使つかわれているので、ネジをなくす心しん配ぱいがない。

  This panel uses captive screws, so you don't have to worry about losing them.