Is Nylon Insert Nut the Best Bolt Locking Method?
How do Nord-Lock washers compare with nylon insert nuts? This guide lists key parameters to help you make the right choice.
|Nylon Insert Nut||Nord-Lock Wedge-Locking|
|Locking capability||Not reliable. Variable efficiency of the product depending on quality of the nylon insert, on the manufacturer, and on temperature.||Reliable. High and constant quality of the product.|
|Product range||M3-M48||M3-M130 (standard range)|
|Temperature||Efficiency decreases as temperature increases. The usual operating range set by ISO 2320 is limited to [-50°C; +120°C].||Same operating range as regular bolts and nuts, locking function not affected by temperature changes.|
|Assembly/disassembly||Time-consuming operations for installation and dismantling, thereby increases maintenance time.||Swift and easy to assemble/disassemble, even in confined spaces.|
|Clamp load deviation when tightening||Larger deviation in clamp load due to friction-based locking. Lubrication not recommended.||Possible to predict the clamp load. It can be lubricated, and thereby even further minimize clamp load deviation and torsion stress.|
|Reusability||Not recommended for reuse.||Reusable. It does not affect reusability of bolts/nuts.|
|Recyclability||Consists of nylon and steel.||Recyclable. Meets ELV and RoHS directives.|
|Life cycle cost||Variable – from low to very high – depending on application. Involves high mounting costs due
to time-consuming installation.
|Low. Relatively high price per unit. However long life cycle, reusable, improves productivity and minimizes maintenance cost.|
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- Pros and cons of the different bolt locking methods
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