Double Expansion Anchor

Double Expansion Anchors

can be used for fastening into rock, concrete, brick, etc. eliminates high stress points detrimental in fastening into materials of medium hardness, expands fully and has high gripping power.
 
 Ideal for sheer loads or where bolt is subject to side pressure or vibration.
 
 Does not fracture, and permits fastenings at any length.
 
 The test values listed were obtained using 200-250 kgs/cm2 concrete(no aggregate).
 
 A safe working load should not exceed 25% of stated value. 

Installation of Double Expansion Anchor 

Anchor Size 

Min. Drill Dia. 

Hole Depth 

Weight Kgs/1000pcs

Qty. Per Box/Ctn 

Pull out Load (Kgs) 

1/4"

1/2"

1-3/8"

18.2

50/500

1060

5/16"

5/8"

1-5/8"

34

50/500

1340

3/8"

5/8"

1-5/8"

57

50/500

2260

1/2"

7/8"

2-1/2"

82

25/250

4110

5/8"

1"

2-3/4"

114

25/150

6170

3/4"

1-1/4"

2-7/8"

251

10/80

7710