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. |
Which bolt locking product should I use?
Get your free eBook on the topic of bolt loosening and see how different bolt locking products perform.
What you will find in the eBook:
- Pros and cons of the different bolt locking methods
- Evaluation of different products
- A print-friendly Guidance for Selection, to help you decide which product to use in your applications
