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Strike Anchors

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Technical Specifications

Before installing strike anchors, certain technical specifications must be considered to ensure the correct size and length is used based on ultimate holding values, minimum embedment, and holding tensions. A strike anchor is available in a number of sizes including 1/4 in., 1/2 in., and 3/8 in. These concrete fasteners are made from carbon steel and plated with yellow dichromate. Strike anchors can hold up to 13,500 concrete shear pounds and should be used in medium to heavy duty applications.

ULTIMATE HOLDING VALUES –CONCRETE*

Anchor Dia. Inches Anchor Length Inches Thread Length Inches Hole Size Inches Min. Embed. Inches   Space Edge Dist. 2000 PSI Tension Lbs. Concrete Shear Lbs.
1/4 1-3/4 5/8 1/4 1 3-1/2 1-3/4 900 1600
  2-3/8 3/4            
5/16 2-3/4 1-1/4 5/16 1-1/4 3-1/2 1-3/4 1400 3000
  4 1-1/4            
3/8 2-3/8 1 3/8 1-1/2 4-3/8 2-3/16 2200 3400
  3-1/2 1-1/8            
  5 2            
1/2 2-3/4 1 1/2 2 5-1/4 2-5/8 3600 7200
  3-1/2 1-1/8            
  4-3/4 2            
  6 2            
5/8 4 1-5/8 5/8 2-1/2 6-1/8 3-1/16 5400 9200
  4-3/4 1-5/8            
  6 2            
3/4 5 2 3/4 3 7 3-1/2 7500 13500
  6 2            

*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 the specific working ratio.  *Tested by ATEC in accordance with ASTM E488-90 and ICBO   Minimum embedment for satisfactory anchor performance is 4-1/2 bolt diameters.  Deeper embedment will yield higher tension and shear capacity.


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