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Simpson Strong-Tie 1/2" Coil Thread Drop In Anchor

Brand: Simpson Strong-Tie Mfg#: DIA50C
Product#: 137DIA50C
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Drop-in anchors are internally threaded drop-in expansion anchors for use in flush-mount applications in solid base materials.


  • Eliminates the need for precisely drilled hole depths and enables an easier flush installation, consistent embedment and uniform rod lengths
  • Lip at the top of the anchor body keeps the top of the anchor flush with the concrete
  • Available in coil threaded versions for 1/2 in and 3/4 in coil threaded rod
  • Minimum thread engagement should be equal to the nominal diameter of the threaded insert


  • Brand: Simpson Strong-Tie
  • Thread Length: .25 in
  • Ultimate Tension: 70000 lb
  • Type: Internally Threaded Expansion Shell, Coil Thread
  • Finish: Zinc Plated
  • Drill Bit Size: .625 in
  • Standards: Federal A-A-55614, Type I, UL Listed
  • Thread Size: 0.5-6 UNC 2B
  • Material: Carbon Steel
  • Length: 2 in
  • Usage: For Flush Mount Applications in Solid Base Materials