Check the surface
Confirm the wall is hollow, measure panel thickness and check behind the drilling point.
40-Piece Expansion Screw & Petal Nut Kit That Locks Into Hollow Walls
40-Piece Expansion Screw & Petal Nut Kit That Locks Into Hollow Walls
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40-Piece Expansion Screw & Petal Nut Kit That Locks Into Hollow Walls
Regular price
$26.99
Regular price
$26.99
Sale price
Unit price
per
Hollow-wall hardware · sorted and ready
Give hollow walls a better grip.
Expansion anchors open behind the panel as you tighten, creating a broad clamping point for tidy everyday mounting projects.
Expanding petal sleeve
Multiple metric sizes
Hardware and tool options
Grip from behind the panel.The sleeve expands on the hidden side as the screw is tightened.
Expansion-style holdDesigned for suitable hollow panels
Galvanized carbon steelMetal hardware for indoor projects
Several pack choicesSelect 30, 40 or 90 pieces
Tool sold as an optionChoose hardware or the installation tool
The sleeve opens behind the panel.
A smarter anchoring mechanism
The grip happens where you cannot see it.
Once inserted through a prepared hole, the slotted sleeve expands behind the hollow surface. Tightening draws the expanded sleeve toward the panel for a secure clamp.
1Wide flange sits against the visible surface
2Petal sleeve expands on the back of the panel
3Machine screw can be tightened from the front
Measure first, then install
Four deliberate steps to a cleaner mount.
Match the anchor to the panel and attachment, prepare the correct hole and tighten without over-driving.
Drill to match
Use the correct drill-bit diameter for the selected anchor and keep the hole clean.
Insert flush
Push the sleeve through the opening until the flange sits flat against the surface.
Expand and tighten
Set the sleeve with a suitable tool or tighten carefully until the anchor is secure.
40-piece assortment guide
Four labeled sizes in one organized case.
The 40-piece option brings together four sizes with ten anchors of each, making it easy to keep common choices separated and ready.
M4 × 2010 pieces in the 40-piece assortment
M4 × 2510 pieces in the 40-piece assortment
M5 × 2510 pieces in the 40-piece assortment
M6 × 2510 pieces in the 40-piece assortment
Build the kit your project needs
Three hardware counts. One separate tool option.
Select the exact pack or installation tool in the Shopify product options above.
Compact assortment
30 pieces
10 each: M4 × 20, M5 × 25 and M6 × 25.
Four-size case
40 pieces
10 each: M4 × 20, M4 × 25, M5 × 25 and M6 × 25.
Project quantity
90 pieces
30 each: M4 × 20, M5 × 25 and M6 × 25.
Separate selector choice
Prefer a dedicated installation tool?
The hand-operated setting tool is listed as its own product option. Select it separately when you want a purpose-built way to expand compatible hollow-wall anchors.
Everyday indoor projects
Made for lighter hollow-wall mounting tasks.
▣Decorative frames
⌁Small wall organizers
◇Light accessories
＋Workshop supplies
Before you drill
Choose the hardware with confidence.
Which product options are available?
The selector offers 30-piece, 40-piece and 90-piece hardware assortments, plus a separate installation-tool option. Choose the exact item you want before adding it to your cart.
Which sizes are in the 40-piece set?
The 40-piece assortment contains ten each of M4 × 20, M4 × 25, M5 × 25 and M6 × 25.
Does the installation tool come with every hardware set?
The installation tool appears as a separate option in the product selector. Select the tool option separately if it is required for your project.
Can these anchors be used for any wall or load?
Use them only with compatible hollow-panel materials and attachments. Wall construction, panel thickness, anchor size and the mounted item's weight all affect suitability.
What should I check before installation?
Confirm the panel type and thickness, select the matching anchor and drill size, and check the drilling area for concealed electrical wiring, plumbing or other services.
Installation safety: Wear suitable eye protection and follow tool instructions when drilling. Check for hidden wires and pipes before making a hole. Do not use hollow-wall anchors alone for heavy, overhead or safety-critical items such as handrails, large cabinets or television mounts; use appropriate structural support or consult a qualified installer.
Sorted hardware, smoother projects
Choose the right count. Keep the next install moving.
Pick a hardware assortment or select the installation tool, then match every anchor carefully to your hollow-wall project.