CSD/DSD Split-Drive Anchors

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

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.
For CSD, 3/8" diameter fixture hole is recommended for hard fixtures such as steel. For DSD, 5/16"-diameter fixture hole is recommended.
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.

Product Notes

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.

Technical Information

CSD/DSD Design Information

Related Literature

Anchoring and Fastening Systems for Concrete and Masonry Catalog 2016-2017

C-A-2016

C-A-2016 is a 2-year, 340-page catalog detailing Simpson Strong-Tie products used for anchoring into concrete and masonry. Updates include new anchor products within adhesives and mechanical anchors.

Catalog

Product Information Tables

CSD/DSD Product Data
Size (in.)	Model No.	Head Style/Finish	Drill Bit Dia. (in.)	Quantity
Size (in.)	Model No.	Head Style/Finish	Drill Bit Dia. (in.)	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	Countersunk Head – Mechanically Galvanized¹	1/4	100	400
1/4 x 3	DSD25300	Duplex Head – Zinc Plated	1/4	100	400
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.