Four-Wing Knot Expansion Plastic Wall Plug Nylon Hollow Drywall Anchor for Light Picture Frame Mounting
Product Description
The M4 x 32mm Nylon Four-Wing Knot Expansion Wall Plug is a lightweight plastic fastening solution designed for picture frames, small decorative items, and light fixtures on drywall and hollow wall surfaces. The anchor features a four-wing body made from durable PA6 nylon. When the M4 screw is driven into the anchor, the four wings fold outward against the inner cavity wall, creating a secure knot-style mechanical lock that firmly grips the hollow substrate. The pre-drilled installation is straightforward: drill a 6mm hole, insert the anchor flush with the wall surface, then drive the screw in until resistance increases and the wings have fully expanded behind the drywall.
Features
Four-Wing Knot Locking - The four independent wings fold outward as the screw advances, creating a knot-style lock behind the drywall surface that distributes holding force evenly across a wide area.
Quick Screw Activation - Simple screw-driven mechanism requires no special tools beyond a standard screwdriver - just insert, drive, and the wings automatically deploy into locking position.
Light-Gauge Wall Protection - The compact 32mm body length is ideal for 9.5mm and 12.5mm drywall, providing secure anchorage without risking breakthrough into wall cavities or damaging thin plasterboard.
Ribbed Anti-Spin Body - Longitudinal ribs along the anchor body grip the drill hole walls during screw insertion, preventing unwanted rotation that could compromise wing deployment alignment.
Technical Parameters
| Product Name |
Nylon Four-Wing Knot Expansion Wall Plug UW Series |
| Model Number |
UW-M432 |
| Screw Diameter |
M4 |
| Anchor Length |
32mm |
| Wing Count |
4 Wings |
| Material |
Nylon PA6 / Polyamide Engineering Plastic |
| Color Options |
White, Grey, Blue, Natural (customizable) |
| Anchor Structure |
Four-wing folding body with knot-expansion mechanism |
| Drill Hole Diameter |
6mm |
| Min Embedment Depth |
35mm |
| Wing Expansion Range |
6-14mm |
| Pre-drill Required |
Yes - drill hole to recommended diameter |
| Recommended Drill Type |
Masonry drill bit for hollow substrates |
| Load Capacity (Plasterboard) |
Up to 15kg per anchor |
| Load Capacity (Hollow Brick) |
Up to 20kg per anchor |
| Pull-Out Resistance |
Varies by substrate density and wing expansion depth |
| Shear Strength |
Up to 25kg in 12.5mm plasterboard |
| Installation Method |
Pre-drill hole → insert anchor flush → drive screw to expand wings |
| Installation Tool |
Drill + Screwdriver / Impact driver with Phillips bit |
| Key Mechanism |
Screw drives into anchor body forcing four wings to fold outward creating knot-lock |
| Anti-Rotation Feature |
Ribbed body prevents spinning during screw insertion |
| Suitable Substrates |
Plasterboard, Drywall, Gypsum Board, Hollow Brick, Cavity Wall, Aerated Concrete, Lightweight Concrete |
| Common Uses |
Small Picture Frames and Light Decor on Drywall |
| Temperature Range |
-40°C to +80°C |
| Environmental Suitability |
Indoor and outdoor use (UV-stabilized PA6) |
| Corrosion Resistance |
100% rust-proof plastic construction |
| Compliance |
RoHS Compliant, REACH Compliant |
| Standard Packaging |
100 / 200 / 500 / 1000 pieces per box or poly bag |
| Screws Included |
Anchors sold separately, matching screw kits available |
| Certifications |
ISO 9001:2015 |




FAQ
Do you have full standard sizes in stock for plastic expansion anchors?
We have complete conventional sizes in stock, full specifications ready for immediate shipment, support mixed size bulk wholesale.
What is the material and load-bearing capacity of your plastic wall plugs?
Made of high-quality new engineering plastic, high toughness anti-crack; stable holding force for drywall, hollow wall and plasterboard, suitable for light and medium load installation.
What types of walls and base materials can this plastic wall plug be used for?
It is widely applicable to gypsum board, plasterboard, hollow brick, aerated concrete, light concrete and cavity wall, no need pre-drilling for soft substrates.
What is your MOQ and wholesale price discount policy?
Low MOQ supports small batch trial order; the more quantity you order, the more favorable wholesale price, exclusive discount for long-term distributors.
What is your production lead time and mass supply capacity?
Spot goods can be shipped within 3-7 days; large batch orders 7-15 days, stable daily output to support continuous large-volume supply for distributors.
Can you customize size, color, packaging and OEM private label?
We support custom size, color, box packaging, carton marking and OEM/ODM private label service for your local market sales.
Do you support mixed batch with other fastener products?
Yes, you can mix order with our other fasteners like screws, bolts and wall plugs to fill one container conveniently.
Can I get free samples for quality checking?
Free samples are available, customers only need to bear the freight; sample size and quantity can be arranged according to your requirement.