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Technical Information:
The
Single expansion anchor consists of a nut, a cone and a tubular
shield preassembled as a single unit. The two piece tubular
shield is bound together with one spring band. It contains a
wedge shaped nut at one end. Integral lugs on the nut and cone
keep the wedges from turning in the tubular shield during expansion.
The anchor are of precision die-cast zinc alloy commonly known
as Zamak 5. the expansion action at one end of the anchor distributes
the anchored load throughout the length of the anchor. This
expansion anchor is recommended for shear loads or where the
bolt is subjected to side pressure or vibration. Once fastened,
the object may be unbolted, removed, and/or refastened.
Single Expansion Anchor concrete anchor/fastener -
Approvals:
Meets Zamak 5 Zinc Alloy: A.S.T.M. Specification 24 (AC41A)
and S.A.E. 925.
Single Expansion Anchor concrete anchor/fastener -
Applications:
Medium duty in concrete, block and brick.
Single Expansion Anchor concrete anchor/fastener -
Installation:
(1) Drill hole of recommended diameter, see chart below,
into the base material to a depth equal to, or slightly deeper
than the length of the expansion shield. Clean out the hole
of all dust and cuttings. (2) Place the Single Expansion anchor,
nut end first, into the hole. The top end of the anchor should
be flush or slightly below the base material surface. (3)
Place the object to be fastened over the anchor in the base
material and bolt into place. The bolt should engage 2/3 of
the threads of the anchor.
Single Expansion Anchor concrete anchor/fastener -
Anchor Spacing:
The forces on a Single expansion anchor are transferred
to the material that it is installed in. If the anchors are
installed too close together, it can cause an interaction
of the forces, thus reducing the holding power of the anchor.
As a rule of thumb, the expansion 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 anchor spacing should be increased.
Single Expansion Anchor concrete anchor/fastener -
Bolt Length:
Thickness of material to be fastened plus length
of anchor equals bolt length.
Single Expansion Anchor concrete anchor/fastener -
Technical Data
| Anchor Size |
Anchor Length |
Hole Size |
Bolt Dia. |
Pull-Out 3000 psi Concrete |
| 1/4" |
1-5/16" |
1/2" |
1/4" |
800 lb. |
| 5/16" |
2" |
3/4" |
5/16" |
1100 lb. |
| 3/8" |
2" |
3/4" |
3/8" |
1450 lb. |
| 1/2" |
2-1/2" |
7/8" |
1/2" |
1850 lb. |
| 5/8" |
3-5/8" |
1" |
5/8" |
2400 lb. |
| 3/4" |
2-3/4" |
1-1/4" |
3/4" |
3000 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 the specific working
ratio. Minimum embedment for satisfactory anchor performance
is 4-1/2 bolt diameters. Deeper embedments will yield higher
tension and shear capacity.
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