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Böllhoff standard 53040 | steel | 8 | zinc-plated | Cr (VI) - free | metric thread
Vargal® self-locking nuts offer reliable protection against the automatic loosening of screw connections even with strong vibrations. A metallic clamping part in the form of a coil spring is integrated. This compresses the fourfold slit, elastic collar together. The clamping force acts uniformly on the threads of the screw and does not damage the thread. The clamping force is maintained even in case of repeated reuse. The Vargal® lock nuts are processed in the same way as conventional nuts and comply with the German Federal Railway Standard BN 205 107 B
Advantages:
• Integrity of the threads despite high clamping force
• Reusable several times while retaining clamping force
• Fulfilment of the German Federal Railway Standard BN 205 107 B
Vargal® self-locking nuts offer reliable protection against the automatic loosening of screw connections even with strong vibrations. A metallic clamping part in the form of a coil spring is integrated. This compresses the fourfold slit, elastic collar together. The clamping force acts uniformly on the threads of the screw and does not damage the thread. The clamping force is maintained even in case of repeated reuse. The Vargal® lock nuts are processed in the same way as conventional nuts and comply with the German Federal Railway Standard BN 205 107 B
Advantages:
• Integrity of the threads despite high clamping force
• Reusable several times while retaining clamping force
• Fulfilment of the German Federal Railway Standard BN 205 107 B
Material version:
8
Cr(VI) Note:
Cr(VI)-free
Flange/washer:
without flange
Risk hydrogen embrittlement:
Thread type:
Metric thread
Force application:
Hexagon head
Material:
Steel 8
Installation method:
Screw into place with tool
Surface:
zinc-plated
Application:
Joining by bolt, joining by screw
Product type:
with locking element
Product group:
Nuts
RoHS conformal:
Material:
Steel
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Böllhoff bulletin: Changeover to Cr6+-free protective zinc layers for fasteners
Fastening and assembly technology: Products and services
The Manual of fastening Technology: 8th edition