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The Unifix Class 10 Nylon Insert Nuts (DIN 985) are professional-grade fasteners designed for engineers, mechanics, and construction professionals who require high-strength, vibration-resistant connections. Featuring an integrated nylon collar, these nuts prevent accidental loosening in dynamic environments, making them ideal for automotive and machinery assemblies; however, note that these fasteners are generally intended for single-use applications as the nylon locking element may degrade after removal.
| Colour | Silver |
|---|---|
| Model Part Number | DIN 985 |
| Brand | Unifix |
It is generally recommended to use new nuts when reassembling, as the internal nylon collar deforms to create the lock and may lose its effectiveness upon removal.
Class 10 indicates the tensile strength of the steel, denoting that these are high-strength fasteners suitable for heavy-duty load-bearing applications.
They feature a corrosion-resistant silver finish that provides good protection, but they are not stainless steel and should be kept away from harsh, corrosive chemicals.
No, the nylon insert has a temperature threshold. High temperatures can cause the nylon to melt or deform, destroying the locking property.
DIN 985 is a German standard that specifies the dimensions, mechanical properties, and tolerance for prevailing torque type hexagon nuts with a non-metallic insert.
The nylon insert creates initial resistance; this is normal. Ensure the bolt threads are clean and free of debris to prevent cross-threading.
Verify that the bolt has passed completely through the nylon collar. If it hasn't, the locking mechanism is not fully engaged.
For installation, use a properly sized wrench or socket to avoid rounding the hexagonal head. While they can be installed with manual hand tools, a torque wrench is recommended to reach the specific clamping force required for your project. Compatibility is determined by thread pitch and diameter; ensure you match your bolt specification exactly to the DIN 985 dimensions. When storing, keep these in a dry, cool location to prevent premature degradation of the nylon insert and to maintain the integrity of the silver protective coating.
