DIN 22425 Triangular Nut with Collar
FLOK supplies triangular nuts with collar DIN 22425, property classes 5.8/8.8, steel or stainless A1–A5, for explosion-proof equipment.
DIN 22425 is a specialized fastener type: a triangular-shaped nut with a collar to increase the contact area with the material. A special tool is used for installation: the nuts are tightened with triangular wrenches matched to the size of the outer side. This prevents loosening with ordinary tools. The product has an internal bore with metric thread.
Materials and features
Made of carbon steel with property classes 5.8 or 8.8. The metal can be coated with a layer of zinc, which increases the service life of the fastener. A stainless steel version, grades A1–A5, is also available, intended for continuous contact with aggressive environments.
Products of this type are used in explosion-proof electrical equipment, including mine installations — the scope of application is limited. Nuts with a collar provide secure fastening of parts and protect the joint from unauthorized disassembly. FLOK supplies this fastener.
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