Project Description

The Nabla Fastening System is an safe and reliable system, most widely used in Europe. It can be used in Tram, LRT, Metro, Main Line and High Speed tracks. The special shape of the Nabla blade generates a dynamically stable toe load on the rails when the nut is torqued.

Nabla rail fastening system


ItemPart NamePcs / SetTypesMaterial
1Nabla Clip2Thickness: 4mm or 4.5mm60Si2MnA
2Rail Insulator2For Rail of UIC54,UIC60,
50kg rail,60kg.
Reinforced Nylon 66
or PA66
3Screw Spike2For Rail of UIC54,UIC60,
50kg rail,60kg.
Grade 4.6: Q235;
Grade 5.6: 35#
Grade 8.8: 45#
4Nut2Can be customizedGrade 5: 35#
Grade 8: 45#
5Spring Washer218.25x34x78mm65Mn

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