Non-Conductive Nylon Knot Wall Plug Four-Wing Expansion Anchor for Cable Tray Hollow Wall Installation
Product Description
The M6 x 55mm Nylon Four-Wing Knot Expansion Wall Plug is a non-conductive plastic fastening solution engineered for cable trays, electrical conduits, and junction box mounting on hollow wall and cavity wall surfaces. The anchor features an electrically insulating PA6 nylon body, making it the safe choice for installations near electrical wiring where metal fasteners could pose short-circuit or grounding hazards. The four-wing knot-expansion mechanism deploys when the M6 screw is driven in, creating a secure lock behind the hollow wall surface. Its reusable wing design allows for removal and reinstallation when cable tray layout adjustments are needed. Installation requires a 10mm pre-drilled hole, flush anchor insertion, and screw driving to activate the full four-wing knot-lock.
Features
Rust-Proof Nylon Construction - 100% rust-proof PA6 nylon body ensures permanent reliability in utility spaces where humidity, condensation, and temperature fluctuations could corrode metal fasteners over the installation lifetime.
Non-Conductive Plastic Body - The fully electrically insulating nylon material provides inherent safety for cable tray and conduit mounting near live wiring, eliminating grounding and short-circuit risks associated with metal anchors.
Reusable Wing Design - The four-wing mechanism can be retracted by unscrewing, allowing anchor removal and reinstallation when cable tray configurations change - a practical advantage for evolving electrical installations.
Deep 55mm Cavity Reach - Extended body length ensures the wings deploy deep within hollow wall cavities, engaging solid material beyond the surface layer for reliable cable tray support under distributed cable weight.
Technical Parameters
| Product Name |
Nylon Four-Wing Knot Expansion Wall Plug UW Series |
| Model Number |
UW-M655 |
| Screw Diameter |
M6 |
| Anchor Length |
55mm |
| 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 |
10mm |
| Min Embedment Depth |
58mm |
| Wing Expansion Range |
10-24mm |
| Pre-drill Required |
Yes - drill hole to recommended diameter |
| Recommended Drill Type |
Masonry drill bit for hollow substrates |
| Load Capacity (Plasterboard) |
Up to 35kg per anchor |
| Load Capacity (Hollow Brick) |
Up to 48kg per anchor |
| Pull-Out Resistance |
Varies by substrate density and wing expansion depth |
| Shear Strength |
Up to 55kg 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 |
Cable Trays and Electrical Conduits on Hollow Wall |
| 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.