The Shanghai Grand Theater designed by the French firm Charpentier et Associes is striking for its curved roof resembling a Napoleonic era militarycap.
法国夏邦杰建筑设计事务所设计的上海大剧院，弧形拱顶的造型酷似拿破仑时代士兵的军帽。
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Also known as Hex Head Screws or Hex Head Bolts. Includes Standard, Drilled Head, Left Hand Threaded, Self-Sealing, and Military Specification Cap Screws.