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Kraftiga planbrickor DIN 7349 i rostfritt A4-stål för skruvförband med höga klämkrafter och belastningar.
Kraftiga planbrickor DIN 7349 i rostfritt A4-stål för skruvförband med höga klämkrafter och belastningar.
Teknisk måttritning och dimensionstabell för kraftig planbricka DIN 7349 i syrafast A4 rostfritt stål.
Kraftiga planbrickor DIN 7349 i rostfritt A4-stål för skruvförband med höga klämkrafter och belastningar.
Kraftiga planbrickor DIN 7349 i rostfritt A4-stål för skruvförband med höga klämkrafter och belastningar.
Teknisk måttritning och dimensionstabell för kraftig planbricka DIN 7349 i syrafast A4 rostfritt stål.

Heavy-duty washer | A4 | DIN 7349

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SKU: 104542
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Description

The A4 tension sleeve washer is intended for use in bolted joints with heavy-duty tension sleeves. The product complies with DIN 7349 and is used where an extra thick and stable washer is required to distribute high clamping forces without deforming. It is suitable for professional installations where long service life and consistent performance are essential.

Area of application

The product is used in jig construction (fixtures and clamps), machine building, and other applications with high and concentrated clamping forces. It is designed for bolted joints with tension sleeves where a thicker washer than standard washers (e.g., DIN 125) is required, and where the A4 material provides the necessary protection against corrosion and mechanical stress.

Technical specifications

  • Product type: Washer
  • Product family: Tension sleeve washers
  • Material grade: A4
  • Standard: DIN 7349
  • Environment: Marine / Outdoor / Indoor
  • Delivery unit: Piece

Frequently asked questions (FAQ)

What is the difference between a tension sleeve washer (DIN 7349) and a standard washer (DIN 125)?

DIN 7349 is significantly thicker than a standard washer of the same dimension (e.g., approximately 4 mm for M8 compared to approximately 1.6 mm for DIN 125) and has a smaller outer diameter. The extra thickness allows the washer to withstand higher clamping forces without deforming, which is required for assemblies using screws and heavy-duty tension sleeves.

Where is the DIN 7349 washer used in practice?

The washer is primarily used in jig construction (fixtures and clamps), machine design, and other applications where bolted joints are subjected to high and concentrated clamping forces, such as together with tension sleeves in tool making.

How do I choose the right size of washer?

The thread size of the washer must match the dimension of the screw/tension sleeve, e.g., an M10 washer fits an M10 screw or tension sleeve of the same dimension. Always ensure that the washer and screw/tension sleeve have the same dimension for secure assembly.

Does A4 stainless steel withstand outdoor and marine environments?

Yes, A4 (AISI 316) is acid-proof and provides high protection against pitting and crevice corrosion, making the washer suitable for marine environments, humid outdoor environments, and chemically demanding conditions.