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Simpson Zinc Plated Wedge-All® Anchors

Thursday, July 31, 2008
Customer Reviews


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Wedge-All® - Zinc Plated

The zinc plated Wedge-All® is Simpson Strong-Tie's name for its wedge anchor that is manufactured from carbon steel and is zinc plated. The two versions of the zinc plated wedge anchors are the threaded version and the tie-wire. The threaded version comes packaged with the correct number and size of zinc plated nuts and washers. The wrap around one piece clip is also zinc plated. These wedge anchors are used in solid concrete and are not designed nor should they ever be used in brick or block base materials.

Zinc Plated - Threaded Version

The threaded version of the zinc plated Wedge-All® wedge anchor is sold in eight (8) diameters ranging from 1/4" to 1-1/4". Each diameter is available in different lengths to accommodate various fixture thicknesses and embedment depths. This threaded version of these wedge anchors use the tightening of the nut to set the anchor and does not require the bottom of the hole for setting purposes.

Tie Wire Zinc Plated Wedge Anchors

The tie-wire version of these wedge anchors are set by using a claw hammer and comes in one diameter and length. These wedge anchors are used for supporting fixtures that are attached using a wire. The end opposite the clipped end of the Wedge-all® is flattened and also has a hole for attaching a wire or jack chain. This wire or chain is used for hanging a drop ceiling or a light fixture from a concrete ceiling.

Codes & Federal Specifications for the Zinc Plated Wedge-All®

Tie-wire Wedge-All® wedge anchors are not coded listed. The threaded version of this wedge anchor meets the following specifications:

Federal Specifications A-A1923A, Type 4
City of L.S. RR24682
Factory Manual 3017082 and 3031136
Florida State 11506.8
Underwriters Laboratories File Ex3605

Testing Criteria for Zinc Plated Wedge-Alls

Wedge-All® wedge anchors have been tested with the ICC-ES's criteria for expansion anchors (ACO1) for shear and tension loading under static loads, the wind and seismic loading, combination loading under shear and tension and minimum edge distance as well as critical edge distance for an unsupported edge of the concrete.

Hole & Bit Size

These wedge anchors require a hole to be drilled into the concrete the same diameter as the Wedge-All® being installed. One must keep in mind that anchor size is the same as the hole size. The bit to be used must be a carbide-tipped bit matched to the diameter of the anchor. For example, a hole for a 3/8" Wedge-All® anchor must be drilled using a 3/8" carbide tipped bit that meets ANSI standards. The hole also needs to be drilled using a hammer drill since hole tolerance is critical for the wedge anchor to have proper holding values. (See Chart A)

Hole in the Fixture Being Fastened to the Concrete

If the hole to be drilled in the concrete will be done with the fixture in place, then the hole in the fixture needs to be larger than the diameter of the anchor being installed. For diameters ranging from 1/4" to 3/4", the hole in the fixture needs to be 1/16" larger. For anchor ranging from 7/8" to 1-1/4" diameter, the fixture's hole needs to be 1/8" larger. The bit or the wedge anchor will not fit through a hole of the same size. (See Chart A)

Wrench Size for the Zinc Plated Wedge-All® Anchor

The size of the wrench used to tighten the nut to set the wedge anchor is determined by the diameter of the Wedge-All® being installed. (See Chart A)

Zinc Plated Wedge-All® Wedge Anchors (Chart A)

Diameter of Wedge-All®

Hole/Bit Diameter

Size of Wrench

Hole in Fixture (Minimum)

































Length Identification for Zinc Plated Wedge-Alls

Each Wedge-All® wedge anchor is stamped with a letter of the alphabet on the threaded end of the anchor to identify the length of the anchor after it has been installed in concrete. Each letter represents a range for every 1/2". For example, the letter "I" represents an anchor length from 5-1/2" up to but not including 6". This allows for inspection of the anchor to determine the depth that anchor is installed into the concrete. Once can determine this by subtracting the length of the wedge anchor above the surface of the concrete from the designation of 5-1/2" up to but not including 6".

Installation of the Threaded Version Wedge-All®

If the anchor is to be inserted through the fixture while it is in place, then the holes in the fixture need to be larger than the nominal diameter of the Wedge-All® being installed. (See Chart A)

* Impact wrenches should not be used for installed these wedge anchors.
* Take caution that the hole is not oversized since this will make it difficult to set the anchor and will reduce the holding values.

Below is step by step instructions on how to install the threaded version of the Wedge-All® wedge anchor:

1. With a hammer drill, drill a hole in the concrete using a carbide tipped bit that meets ANSI standards and is equal to the diameter of the wedge anchor being installed. Drill the hole deep enough to allow the anchor to be inserted into the concrete the minimum embedment depth that can anchor diameter requires. Drill the hole slightly deeper than the embedment depth of the anchor to allow dust and/or debris from the drilling and installation process to fall.

2. Using compressed air, blow out the hole. Overhead applications do not have to be blown out with compressed air.

3. Place the nut and washer on the threaded end of the Wedge-All® so that the nut is flush with the top of the anchor to protect the threads during installation. Insert the anchor through the hole in the fixture and into the hole drilled in the base material. Strike the anchor and nut with a hammer until the nut and washer are tight against the fixture.

4. With a wrench, turn the nut clockwise until tight in order to reach the recommended torque values for the anchor's diameter. Place the nut on the threaded end of the wedge anchor being installed.

Installing the Tie-Wire Wedge-All® Anchor

1. With a hammer drill, drill a hole in the concrete 1/4" in diameter using an ANSI standard carbide drill bit, making sure the depth of the hole is at least 1-1/2" deep.

2. Insert the Tie-Wire wedge anchor into the hole and strike the head of the anchor with a hammer until the head meets the surface of the concrete.

3. Using the claw end of the hammer, set the anchor by prying or pulling on the anchor.

Zinc Plated Wedge-All® Product Information

Part Number



1/4” x 1-3/4”


1/4” x 2-1/4”


1/4” x 3-1/4”


3/8” x 2-1/4”


3/8” x 2-3/4”


3/8” x 3”


3/8” x 3-1/2”


3/8” x 3-3/4”


3/8” x 5”


3/8” x 7”


1/2” x 2-3/4”


1/2” x 3-3/4”


1/2” x 4-1/4”


1/2” x 5-1/2”


1/2” x 7”


1/2” x 8-1/2”


1/2” x 10”


1/2” x 12”


5/8” x 3-1/2”


5/8” x 4-1/2”


5/8” x 5”


5/8” x 6”


5/8” x 7”


5/8” x 8-1/2”


5/8” x 10


5/8” x 12”


3/4” x 4-1/4”


3/4” x 4-3/4”


3/4” x 5-1/2”


3/4” x 6-1/4”


3/4” x 7


3/4” x 8-1/2”


3/4” x 10”


3/4” x 12”


7/8” x 6”


7/8” x 8”


7/8” x 10”


7/8” x 12”


1” x 6”


1” x 9”


1” x 12”


1-1/4” x 9”


1-1/4” x 12”


Tie-Wire Anchor

There are two types of Wedge-All® anchors available from Simpson- the threaded version and the tie-wire version. It is important to determine which one is the best choice for your unique application. It is also imperative to follow all installation instructions carefully to help ensure proper and safe placement of these anchors. Wedge-all® anchors are strong anchors that can be used in a variety of applications and projects.

Purchase Wedge Anchors


Always use personal protective equipmentAs with any anchoring project, it is important to keep safety in mind and follow instructions carefully. Always remember to wear safety goggles, handle all tools with extra care and follow all technical specifications. This article is meant to serve only as a basic explanation of concrete fasteners. Always refer to manufacturer's instructions or consult a contracting expert during any anchoring project.

Article Written By:
Mike Pistorino, Vice-President Operations





Concrete Fasteners, Inc. has over 40 years of experience selling concrete fasteners. We can ship out one box or a whole pallet of concrete anchors. Our products are of the highest quality... "your satisfaction is guaranteed". We ship all orders the same day the order is received.

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