Install and Test Molly Bolt (Hollow Wall Anchor)
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Drywall anchors
What happens here
Next, the Molly bolt, also referred to as a hollow wall anchor, is introduced. For its installation, a pilot hole is first drilled into the drywall sheet using a cordless drill and an appropriately sized drill bit (as specified by the anchor's instructions). The Molly bolt is then inserted into the drilled hole. The screw within the Molly bolt is tightened, which causes the anchor's wings to expand and grip the back of the drywall firmly, securing it in place. After the anchor is set, the screw is removed in preparation for the load test. A bucket is hung from the anchor, and water is gradually added until failure. The Molly bolt fails at roughly 120 lbs.
Goal: Install and test the holding strength of a Molly bolt
Tools and materials
- Bucket — Holding water to apply weight during the test
- Cordless Drill Milwaukee — Drilling the pilot hole and tightening the Molly bolt
- Drill Bit — Creating the pilot hole for the anchor
- Drywall Sheet — The surface into which the anchors are installed
- Molly Bolt — The anchor being installed and tested
- Screw — Used with the anchor for installation and holding weight
- Water N/A — Adding weight to the bucket
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