Knotted chain | A4 | DIN 5686

Do you need a chain that functions safely even in damp, salty, or chemically demanding environments? Knot chain A4 / AISI 316 acid-proof stainless steel is built to withstand corrosion and maintain its strength over a long period. It combines relatively low weight with high breaking strength and is optimized to withstand heavy mechanical stress and frequent use.

AREA OF APPLICATION

Perfect for securing, suspending, anchoring, and connecting in coastal areas, docks, boat equipment, the food industry, and chemical plants. The chain's knot-shaped links make it more flexible and less prone to tangling compared to standard chain, while providing a stable and vibration-resistant connection. Easy to handle and requires minimal maintenance even during continuous operation.

TECHNICAL SPECIFICATIONS

Product type: Knot chain
Standard: DIN 5686
Grade: A4 / AISI 316
Material class: Not specified (acid-proof stainless steel)
Thread type: Not applicable
Surface treatment: Untreated (natural colored stainless steel)
Head shape: Round link / knot link
Grip type: Not applicable

FREQUENTLY ASKED QUESTIONS (FAQ)

What characterizes a knot chain and how does it differ from a welded link chain?

A knot chain is manufactured by knotting and winding the wire together in each link instead of welding it. This construction provides a very smooth, flexible, and relatively light chain that does not twist as easily, while the knots provide good strength and a decorative, functional structure for light to medium-duty suspension and securing tasks.

Why is acid-proof A4 / AISI 316 required for knot chain in marine and chemical environments?

Acid-proof A4 steel (AISI 316 / 1.4401) contains molybdenum, which provides maximum resistance to crevice corrosion and pitting that can otherwise easily occur on the unprotected contact surfaces inside the knots when in contact with saltwater, brackish water, or chemicals. The A4 quality ensures that the chain maintains its strength and mobility without corroding or rusting apart.

Which applications is knot chain in acid-proof A4 best suited for?

Thanks to the combination of low weight, good corrosion resistance, and flexibility, A4 knot chain is widely used for:

• Marine environments: Securing equipment, drainage plugs, handles, and hatches on boats and docks.

• Industry & sanitation: Suspension of fixtures, signs, pumps, and pipe elements in damp or chemically demanding spaces.

• Consumer & outdoor: Durable installations in gardens, agriculture, and outdoor environments where the chain is exposed to the elements.

Note: Knot chain is intended for securing, suspension, and light pulling/lashing assemblies. It must not be used as a lifting chain for personnel lifting or heavy suspended loads according to directives for lifting gear.