Nabla Clip Fastening System
Nabla Clip Fastening System is a railway track fastening system used to connect rails and railway ties (or sleepers). This system employs a special fastening device known as the "Nabla clip" to ensure the stability and safety of the track.

Nabla Clip Fastening System Components
| Nabla clip | Insulator | Screw spike | Spring washer | |
|---|---|---|---|---|
| Pieces required | 2 | 2 | 2 | 2 |
| Material | 60Si2MnA, 60Si2CrA | Reinforced Nylon 66 (PA66) | Grade5.6:35# | ML08AI |
| Size | 4mm or 4.5mm thick | UIC54,UIC60,50kg rail,60kg rail | 18.25x34x78mm | |
| Note | 42-47HRC 3 million times without breaking; Application for different rail type | Density:1.3-1.45g/cm3 Tensile strength:≥170Mpa Elongation:≤4.4% Bending Strength:≥250Mpa Impact Strength(No gap):≥80KJ/m2 Melting point:250-270℃ Insultion resistance:≥1X108Ω Glass fiber content:30-35% Hardness:≥110HRR |

