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Simpson Strong-Tie DIA37 3/8" Drop In Anchor

Brand: Simpson Strong-Tie Mfg#: DIA37
Product#: 137DIA37
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Drop-in anchors are internally threaded drop-in expansion anchors for use in flush-mount applications in solid base materials.


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


  • Brand: Simpson Strong-Tie
  • Ultimate Tension: 70000 psi
  • Thread Length: .625 in
  • Thread Size: 0.375-16 UNC 2B
  • Type: Internally Threaded Expansion Shell
  • Standards: Federal A-A-55614, Type I, UL Listed
  • Material: Carbon Steel
  • Drill Bit Size: .5 in
  • Finish: Zinc Plated
  • Length: 1.5 in
  • Usage: For Flush Mount Applications in Solid Base Materials