Double Expansion Anchor

DOUBLE:
Can be used for fastening into rock, concrete, brick, etc.
Eliminates high stress points detrimental in fastening into materials of medium hardness, expands fully andhas 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 below were obtained using 4000 psi concrete (no aggregate).
A safe working load should not exceed 25% of stated values.
SINGLE:
Can be used for fastening into rock, concrete, brick, etc.
If bolt is removed and replaced, holding power is unaffected.
One-piece design, made of zinc alloy, is entirely rustproof.