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CSD/DSD Split-Drive Anchors

CSD/DSD

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The Split-Drive anchor is a one-piece expansion anchor that can be installed in concrete, grout-filled block and stone. As the anchor is driven in, the split-type expansion mechanism on the working end compresses and exerts force against the walls of the hole.

Key Features

  • Available in countersunk (CSD) and duplex-head (DSD) styles
  • DSD anchor can be removed with a claw hammer for temporary applications

Material

  • Carbon steel

Finish

  • Zinc plated; mechanically galvanized

Installation

  1. Drill a hole in base material using a 1/4"-diameter carbide-tipped drill. Drill hole to specified embedment depth and blow clean using compressed air. (Overhead installation need not be blown clean.) Alternatively, drill hole deep enough to accommodate embedment depth and dust from drilling. Position fixture and insert split-drive anchor through fixture hole.
  2. For CSD, 3/8"-diameter fixture hole is recommended for hard fixtures such as steel. For DSD, 5/16"-diameter fixture hole is recommended.
  3. Drive anchor until head is flush against fixture.

Caution

Oversized holes in the base material will greatly reduce the anchor’s load capacity. For CSD, embedment depths greater than 1 1/2" may cause bending during installation.

Warning

(CSD only): Industry studies show that hardened fasteners can experience performance problems in wet or corrosive environments. Accordingly, use these products in dry, interior and non-corrosive environments only.

Related Literature

2022–2025 Product Guide — Anchoring, Fastening Systems and Restoration Solutions for Concrete and Masonry
S-A-PG22
A product guide providing information on Simpson Strong-Tie® anchoring adhesives, mechanical anchors, direct fastening, carbide drill bits and restoration products for concrete and masonry.
Product Guide
Anchoring, Fastening, Restoration and Strengthening Systems for Concrete and Masonry
C-A-2021
An informative and comprehensive catalog of products belonging to our anchoring, fastening, restoration and strengthening systems for concrete and masonry.
Catalog
Sistemas de anclaje, sujeción, restauración y fortalecimiento para concreto y mampostería
C-A-2021SP
Un catálogo completo de productos e información para los sistemas de anclaje, sujeción, restauración y fortalecimiento para concreto y mampostería.
Catalog
Tension Performance of Post-Installed Anchors Adjacent to Abandoned Holes
L-A-ABANHOLE21
This letter is intended to address the performance of Simpson Strong-Tie® post-installed concrete anchors in normal-weight concrete when installed adjacent to holes that have been abandoned.
Engineering Letter
Safety Data Sheet for Mechanical Anchors
SDS-MechAnchors-NA-ENG-0520
Intended to provide information for use in workplace chemical management; information such as physical properties; hazards; protective measures; precautions for handling, storing, and transportation.
SDS
Ficha de Datos de Seguridad para Anclas Mecánicas
SDS-MechAnchors-NA-ES
Diseñado para dar información útil en la gestión de químicos en el lugar de trabajo; p.ej. propiedades físicas; riesgos; medidas de protección; precauciones para manejo, almacenamiento y transporte.
SDS
Fiche de Données de Sécurité pour Ancrages Mécaniques
SDS-MechAnchors-NA-FRCA
Prévu pour fournir de l’information sur la gestion des produits chimiques au travail comme propriétés physiques, dangers, mesures de protection et précautions de manipulation, stockage et transport.
SDS

Product Information Table

Fastener Production Information and Stuff & Things
Model No. Head Type Coating/Material Size (in.) Drill Bit Dia. (in.) Box Qty. Carton Qty.
Footnotes

  1. Mechanical galvanizing meets ASTM B695, Class 55, Type 1. Intended for some pressure-treated wood sill plate applications. Not for use in other corrosive or outdoor environments. See Technical Notes for corrosion information.
CSD25112 Countersunk Head Zinc Plated / Carbon Steel 1/4 x 1 1/2 1/4 100 500
CSD25200 Countersunk Head Zinc Plated / Carbon Steel 1/4 x 2 1/4 100 500
CSD25212 Countersunk Head Zinc Plated / Carbon Steel 1/4 x 2 1/2 1/4 100 500
CSD25300 Countersunk Head Zinc Plated / Carbon Steel 1/4 x 3 1/4 100 400
CSD25300MG Countersunk Head Mechanically Galvanized / Carbon Steel 1/4 x 3 1/4 100 400
CSD25312 Countersunk Head Zinc Plated / Carbon Steel 1/4 x 3 1/2 1/4 100 400
CSD25400 Countersunk Head Zinc Plated / Carbon Steel 1/4 x 4 1/4 100 400
CSD25400MG Countersunk Head Mechanically Galvanized / Carbon Steel 1/4 x 4 1/4 100 400
DSD25300 Duplex Head Zinc Plated / Carbon Steel 1/4 x 3 1/4 100 400

Product Information Tables

CSD/DSD Product Data
Size (in.) Model No. Head Style/Finish Drill Bit Dia. (in.) Quantity
Box Carton
1/4 x 1 1/2 CSD25112 Countersunk Head – Zinc Plated 1/4 100 500
1/4 x 2 CSD25200 100 500
1/4 x 2 1/2 CSD25212 100 500
1/4 x 3 CSD25300 100 400
1/4 x 3 1/2 CSD25312 100 400
1/4 x 4 CSD25400 100 400
1/4 x 3 CSD25300MG Countersunk Head – Mechanically Galvanized1 1/4 100 400
1/4 x 4 CSD25400MG 100 400
1/4 x 3 DSD25300 Duplex Head – Zinc Plated 1/4 100 400
  1. Mechanical galvanizing meets ASTM B695, Class 55, Type 1. Intended for some preservative-treated wood sill plate applications. Not for use in other corrosive or outdoor environments. See Supplemental Topics for Anchors for details.

Code Reports & Compliance

Drawings

PDF DWG DXF RFA IFC SAT