Internet #205299210

Model #DIA37S

DIA Short Drop-In Internally Threaded Anchor for 3/8-in. Rod (100-Pack)

Questions & Answers
  • Hang threaded rod from overhead concrete members
  • Flush anchoring point for removable bolts
  • FM and UL approved
  • See More Details

Frequently Bought Together


Product Overview

Titen HD Mudsill Install

The Professional’s Choice for Anchoring

Titen HD® heavy-duty screw anchors install 5x faster than typical wedge anchors

Titen 2 Install

Fastening for Concrete and Masonry

Titen® 2 concrete and masonry screws are ideal for commercial and residential applications

Strong-Bolt 2 Install

Indoor or Outdoor Anchoring Solutions

Strong-Bolt® 2 wedge anchor provides heavy-duty structural anchoring in both indoor and outdoor applications

Titen HD Install

Removable Anchors Offer Installation Flexibility

Titen HD heavy-duty screw anchors are ideal for projects where anchors may need to be removed

Titen 2 Install

Sheetrock Installation Tips and Tricks

Use Titen 2 concrete and masonry screws to attach furring strips for sheetrock installation

Overhead anchor install

Overhead Anchoring Made Easy

Titen HD rod hangers and DIA drop-ins are ideal for installing mechanical, electrical or plumbing overhead

Strong-Bolt® 2 Installed

Concrete Anchoring Tips and Tricks

Code-listed for seismic and cracked-concrete applications

Titen HD Screw Anchor

Screw Anchor

Can be installed closer to concrete edge than wedge anchors

Titen 2 Screw

Concrete/Masonry Screws

Patented thread design for faster installation

THD rod hanger

Overhead Rod Hanger

No secondary setting needed to install overhead anchor

DIA drop-in anchor

Drop-In Anchor

Flush-mount anchoring into concrete

STB2 wedge anchor

Wedge Anchor

Strong-Bolt 2 wedge anchor tested for performance in concrete or grout-filled block

SL sleeve anchor

Sleeve Anchor

Ideal for anchoring into softer materials, such as brick

Drop-In anchors are internally threaded drop-in expansion anchors for use in flush-mount applications in solid base materials. Available in stainless steel (DIA) or short (DIAS) versions. Minimum thread engagement should be equal to the nominal diameter of the threaded insert.
  • California residents
  • Flush-mount expansion anchor for concrete applications
  • Lipped edge (DIAS) eliminates need for precisely drilled hole depth
  • Hand- and power-setting tools available for fast, easy and economical installation
  • Fixed-depth stop bit helps you drill to the correct depth every time
  • Short length (DIAS) enables shallow embedment to help avoid drilling into rebar or pre-stressed/post-tensioned cables
  • Short drop-in anchors include a setting tool compatible with the anchor to ensure consistent installation
  • Rod size: 3/8 in.
  • Drill bit diameter: 1/2 in.
  • Length: 3/4 in.
  • Caution: Oversized holes will make it difficult to set the anchor and will reduce the anchor's load capacity
  • Shop all Simpson Strong-Tie here.

Info & Guides

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DIA Short Drop-In Internally Threaded Anchor for 3/8-in. Rod (100-Pack)
CSD 1/4 in. x 3 in. Split Drive Anchor (100-Pack)Zinc Nailon 1/4 in. x 2-1/2 in. Pin Drive Anchor (100-Pack)
BrandHiltiSimpson Strong-TieSimpson Strong-TieSimpson Strong-Tie
NameHS-SC 6 in. TE-C Kwik Bolt Mechanical Setting ToolDIA Short Drop-In Internally Threaded Anchor for 3/8-in. Rod (100-Pack)CSD 1/4 in. x 3 in. Split Drive Anchor (100-Pack)Zinc Nailon 1/4 in. x 2-1/2 in. Pin Drive Anchor (100-Pack)
Anchor Diameter (in.)3/8"3/8"1/4"1/4"
Fastener Length (in.)60.7532.5
Package Quantity1100100100
Finish FamilyZincZincZincZinc
Measurement StandardUSSSAESAESAE
Fastener PlatingZincZincZincZinc
Fastener/Connector MaterialSteelSteelSteelSteel
View ProductView ProductView ProductView Product



Anchor Diameter (in.)
Anchor Length (in.)
Fastener Length (in.)
Required Drill Hole Size (in.)


Color Family
Fastener Head Style
No Head
Fastener Plating
Fastener Type
Drop In Anchors
Fastener/Connector Material
No Additional Features
Zinc Plated
Finish Family
No Additional Items Included
Maximum Weight Capacity (lb.)
Measurement Standard
Package Quantity
Product Weight (lb.)

Warranty / Certifications

Manufacturer Warranty
Limited Warranty

Questions & Answers


Simpson lists their 3/8" Drop-In Anchor as having a length of 1 & 9/16". Are these really 3/4" long?

Asked by Van October 21, 2019

The DIA37S is the Zinc Plated Carbon Steel Short Drop-In Anchor and has a length of 3/4"; the DIA37SS is the Stainless Steel regular Drop-In Anchor and has a length of 1 9/16". Thank you!

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