Deadbolts

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• anchor bolt
  An anchor bolt is used to attach objects or structures to concrete. There are many types of anchor bolts, consisting of designs that are mostly proprietary
  
  bolts and washers,Door Bolts
• machine bolt
  A bolt with a square or hexagonal head. machine bolt. n. (Miscellaneous Technologies / Building) a fastening bolt with a machine-cut thread
  
  Dropbolts
• Pigtail Bolts
  Alibaba.com provides pigtail bolt, check pigtail bolt products detail: Pigtail Bolt Grade 5 Heat Treatment Galvanized, choose more bolt products.
  
  Bolts