Concrete Strike Anchor

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Strike Anchor Installation Video

Technical Information:

The strike anchor is an impact-expansion type concrete anchor. The body of the anchor is carbon steel with an interior hole extending the length of the anchor. The hardened drive pin comes inserted in the interior hole of the anchor. The anchor is threaded on the top end where the drive pin is inserted. The other end of the anchor has four equally spaced slots for a portion of its length, with ribs extending the circumference of the anchor for a portion of its length. The entire anchor is yellow dichromate over zinc plating.

Concrete Strike Anchor - Approvals:

Meets or exceeds G.S.A. Standards G.S.A. FF-S-325, Group V, Type 2 Class 2.

Concrete Strike Anchor - Applications:

Medium to heavy-duty into solid concrete.

Concrete Strike Anchor - Installation:

  1. Drill a hole of sufficient depth using a hammer drill and carbide bit the same diameter as the anchor being installed.
  2. Place the washer and nut on the anchor, turning the nut on to the anchor as required – flush with the top, or turned on fully to provide a stud finish.
  3. With nut, washer, and set-pin in place, insert the anchor through the material to be fastened and into the concrete base material.
  4. Using a proper sized hammer, set pin with several sharp and square strikes on the head of the pin until the pin is flush with the top of the anchor. The Concrete Strike Anchor is now properly set. There is no need to torque the nut to set the anchor.

Warning: Wear eye protection.

Concrete Strike Anchor – Anchor Length:

To determine the minimum length strike anchor required, simply add the thickness of the material to be fastened, to the minimum embedment and the thickness of the nut and washer.

Concrete Strike Anchor - Anchor Spacing:

The forces on a Strike Anchor are transferred to the material in which it is installed. If the anchors are installed too close together, it can cause an interaction of the forces, thus reducing the holding power of the anchors. As a rule of thumb, the concrete anchor industry has established a minimum standard of ten (10) anchor diameters for spacing between anchors and five (5) anchor diameters from an unsupported edge. When vibration or sudden impact are part of the load condition, spacing between anchors should be increased.

Concrete Strike Anchor - Technical Data:

Anchor Size Thread Length Minimum Embedment Drill Bit Size Minimum Space Between Minimum Edge Distance Pull-Out 2000 psi Shear 2000 psi
1/4" x 1-3/4" 1/2" - 5/8" 1" 1/4" 3-1/2" 1-3/4" 900 lb. 1600 lb.
1/4" x 2-3/8" 3/4" 1" 1/4" 3-1/2" 1-3/4" 900 lb. 1600 lb.
5/16" x 2-3/4" 1" – 1-1/8” 1-1/4" 5/16" 3-1/2" 1-3/4" 1400 lb. 3000 lb.
5/16" x 4" 1-1/8" – 1-7/8 1-1/4" 5/16" 3-1/2" 1-3/4" 1400 lb. 3000 lb.
3/8" x 2-3/8" 7/8” - 1" 1-1/2" 3/8" 4-3/8" 2-3/16" 2200 lb. 3400 lb.
3/8" x 3-1/2" 1” – 1-1/8" 1-1/2" 3/8" 4-3/8" 2-3/16" 2200 lb. 3400 lb.
3/8" x 5" 1-1/8” - 2" 1-1/2" 3/8" 4-3/8" 2-3/16" 2200 lb. 3400 lb.
1/2" x 3-1/2" 1” - 1-1/8" 2" 1/2" 5-1/4" 2-5/8" 3600 lb. 7200 lb.
1/2" x 4-3/4" 1-1/4” - 2" 2" 1/2" 5-1/4" 2-5/8" 3600 lb. 7200 lb.
1/2" x 6" 1-7/8” - 2" 2" 1/2" 5-1/4" 2-5/8" 3600 lb. 7200 lb.
5/8" x 4" 1-1/4” - 1-5/8" 2-1/2" 5/8" 6-1/8" 3-1/16" 5400 lb. 9200 lb.
5/8” x 4-3/4” 1-1/4” – 1-5/8” 2-1/2" 5/8" 6-1/8" 3-1/16" 5400 lb. 9200 lb.
5/8" x 6" 1-1/4” - 2" 2-1/2" 5/8" 6-1/8" 3-1/16" 5400 lb. 9200 lb.
3/4" x 5" 1-3/4” - 2" 3" 3/4" 7" 3-1/2" 7500 lb. 13500 lb.
3/4"x 6" 1-3/4” - 2" 3" 3/4" 7" 3-1/2" 7500 lb. 13500 lb.

Values shown are average ultimate values and are offered only as a guide and are not guaranteed. A safety factor of 4:1 or 25% is generally accepted as a safe working load. Reference should be made to applicable codes for specific working ratio. Critical applications, vibratory or shock loads, overhead installations, etc. may require a safety factor of as much as 10:1 or more.