Metric nylon-tipped hexagonal dome cap lock nuts, defined in the DIN 986 standard published by the German Institute for Standardization (DIN) , are a combination of acorn cap nuts and dominant torque type lock nuts. They feature a permanently small, non-metallic spacer (nylon/polyamide) that creates friction between the threads of the mated components, thus increasing resistance to loosening forces. Nylon insert lock nuts are reusable a limited number of times, as the threads of the mating bolt may deform but the polymer insert does not cut. These nuts also have a flat round cap covering the hexagonal nut base. The domed surface protects the bolt threads underneath while providing a finished look and can increase security in certain situations. Metric nylon-tipped hexagonal dome cap lock nuts are manufactured in coarse and fine threads from stainless steel, black sheet metal, steel, brass, bronze, and aluminum, and in diameters ranging from M4 to M20.
The requirements in the DIN 986 standard are under the following headings:
These nuts are a very useful mechanical nut when tight fitting with a sealed joint is required. Torque nuts are widely used in metal construction, building construction, steel construction, furniture, automation, mechanical and many other industrial sectors.
These nuts have a smooth appearance and enhance connection security. They are reusable a limited number of times. Furthermore, standard raw materials are used in their production, increasing their functionality and durability. High-strength threads increase resistance to loosening from vibration.
The dominant torque hex dome nut provides simple and easy installation. It can be tightened in the appropriate torque range by mounting with a hexagonal wrench.
Among the numerous test, measurement, analysis and evaluation studies it provides for businesses in various sectors, our organization also provides testing services for nylon tipped hexagonal domed cap lock nuts within the scope of DIN 986 standard, with its trained and expert staff and advanced technological equipment.
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