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Simpson Strong-Tie DIA37S 3/8" Short Drop In Anchor

Brand: Simpson Strong-Tie Mfg#: DIA37S
Product#: 137DIA37S
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Drop-in anchors are internally threaded, deformation-controlled expansion anchors with a pre-assembled expander plug, suitable for flush mounting in solid base materials. A new 1/2" diameter Short Drop-In anchor now complements the existing 3⁄8" diameter offering for solid and hollow concrete applications.


  • Each box includes a setting tool compatible with the anchor to ensure consistent installation
  • Short length enables shallow embedment that helps avoid drilling into rebar or pre-stressed or post-tensioned cables
  • Lipped edge eliminates the need for precisely drilled hole depths
  • Lipped edge enables consistent embedment that contributes to uniform rod lengths and installation into deep and bottomless holes


  • Brand: Simpson Strong-Tie
  • Standards: Federal A-A-55614, Type I, UL Listed
  • Thread Length: .75 in
  • Ultimate Tension: 70000 psi
  • Thread Size: 0.375-16 UNC 2B
  • Finish: Zinc Plated
  • Type: Internally Threaded Expansion Shell, Short
  • Drill Bit Size: .5 in
  • Material: Carbon Steel
  • Length: .75 in
  • Usage: For Flush Mount Applications in Solid Base Materials