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Double Expansion Shields

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Rust proof zamac alloy machine type expansion anchor ideally suited for base materials of questionable strength.  The double expansion anchor consists of pre-assembled sets of shields and an internally threaded expander cone. 

Typical Applications:
  • Timber frames to concrete
  • Steel or wood fastening in corrosive environment
  • Fastening to brick and block walls

Double Expansion Shields

Part No.SizeDrill SizePkg. Qty.Case Qty.
UDA 141/4 x 1-3/81/21001,000
UDA 5165/16 x 1-5/85/850500
UDA 383/8 x 23/450300
UDA 121/2 x 2-1/27/825150
UDA 585/8 x 2-3/4125150
UDA 343/4 x 41-1/41060
Also available in bulk cartons