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Powers Fasteners 1/4" x 2-3/4" Forming Spike

Brand: Powers Fasteners Mfg#: 03794
Product#: 21103794
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The SPIKE® anchor is a patented, one-piece, tamper-proof vibration resistant anchor for use in concrete, block, brick or stone. Several head styles and anchor materials are available. The SPIKE® anchor is formed with an "s" shaped configuration at the working end of the anchor to create an expansion mechanism. Since the anchor is pre-expanded, there is no secondary tightening operation required which greatly reduces the overall cost of an anchor installation.


  • Mushroom and flat head spike anchors are tamper-proof
  • Pre-Expanded Anchor design allows for easy installation
  • Pipe and tie wire spike is an easy to install alternative to direct fastening
  • Forming Spike, which is removable can be used for temporary installations


  • Brand: Powers Fasteners
  • Finish: ASTM B633 Zinc Plated
  • Ultimate Shear: 2585 lb
  • Ultimate Tension: 1320 lb
  • Minimum Embedment Depth: 1.25 in
  • Anchor Diameter: .25 in
  • Drill Bit Size: .25 in