50*70mm Black Nylon Helical Anchor, Plastic Fastener for External Wall/Roof Insulation Board Fixing
Introduction to Spiral Thermal Insulation Anchor Bolts
This self-twisting spiral thermal insulation anchor is integrally injection-molded from modified nylon. No pre-drilling is required; it can be directly screwed into thermal insulation boards such as XPS extruded polystyrene boards, EPS expanded polystyrene foam boards and rock wool boards. The multi-layer spiral blades firmly engage with the foam substrate, and the large disc cap evenly distributes pressure to prevent sagging and damage of the insulation boards. Aging-resistant and corrosion-resistant, it is widely used in external wall thermal insulation systems, roof insulation, cold storage and ventilation duct insulation projects. Supplied by the original manufacturer, custom specifications are available.
Product Features
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No pre-drilling required for efficient installation
Featuring a pointed cone head and spiral blade design, it can be directly screwed into insulation boards with an electric drill, eliminating the drilling process. This greatly saves labor hours and improves construction efficiency.
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Widened umbrella-shaped pressure plate to prevent plate collapse
Large-diameter circular pressure plate features a larger stress area to distribute pressure, avoiding depressions and damage to thermal insulation boards and protecting the thermal insulation layer. |
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Multi-layer spiral barbs for firm anchorage
After the multi-turn spiral blades are screwed in, they firmly lock the foam boards, featuring excellent pullout resistance and low risk of loosening or falling off. |
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Modified nylon material, weather-resistant and anti-aging
Made of high-quality PA nylon raw material, it resists acid and alkali corrosion, does not easily become brittle and crack in high and low temperature environments. It can be used on outdoor exterior walls for a long time, features anti-ultraviolet performance and long service life. |

