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Glossary

Drop-in Anchor

Standard anchor sizes: thread – from M6 to M20; outer diameter – from 8 to 25 mm, length – from 25 to 80 mm.

The actual load must not exceed the specified value by more than 25%.

A drop-in anchor (collet) is a one-piece steel or brass cylindrical sleeve with the following structural elements:

  • an expansion end – it has 4 longitudinal slots needed to form expansion segments, with a ribbed outer surface on this section;
  • an internal expansion cone for wedging into the concrete;
  • a threaded end – fastening items are screwed into it to secure suspended structures.

Applications

Drop-in anchors are indispensable when massive items – architectural elements, metal structures, racking, plumbing equipment – need to be mounted on stone, brick or concrete walls.

Installation

A hole is pre-drilled according to the anchor’s length and diameter, and dust is removed with a brush and a vacuum cleaner. Then proceed according to the following procedure.

  1. Position the anchor with its slotted section facing the wall and carefully drive it in until the opposite end is flush with the wall surface.
  2. Expand the expansion cone with a special tool.
  3. Insert a bolt into the anchor (placing a washer under it), and use a wrench to draw the component being mounted up to the wall.
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