Single Expansion Anchors for anchoring/fastening to concrete, brick or block.

Purchase Single Expansion Anchors online

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Single Expansion Anchor

Single Expansion Anchors

Single Expansion Anchor Description

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 is 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.

Commonly Called

Purchase Single Expansion Anchors OnlineSingle expansion anchors, single expansion shields, keystone single expansion shield, single wedge machine bolt, single, single thunderloc, SMSA, machine screw anchor.

Single Expansion Anchor Features

  • Holding power unaffected if bolt is removed and replaced.
  • One-piece design, made of zinc alloy, is entirely rustproof.
  • Uses include fastening into rock, concrete, brick and block.
  • The anchor uses a standard machine threaded bolt or screw.
  • Medium to heavy duty loads under dead, variable or vibratory conditions in all types of solid masonry.

Single Expansion Anchor Approvals

Meets Zamak 5 Zinc Alloy: A.S.T.M. Specification 24 (AC41A) and S.A.E. 925.

Applications for Single Expansion Anchors

Medium duty in concrete, block, brick and stone

Anchor Spacing Considerations

Purchase Single Expansion Anchors OnlineThe 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 is part of the load condition anchor spacing should be increased.

Determine the Length of Bolt Needed

Thickness of material to be fastened plus length of anchor equals bolt length.