Double Start Screw Twin Double Multiple Threaded Splitting Cones

The double start screw is a screw with a twin or double start thread has two threads running along the body of the screw instead of just one. Screws with twin-start threads often have a larger pitch, which means they can be inserted or removed twice as fast as a screw with a single-start thread. They will also hold material more securely. Ever Hardware provides the custom-made double start screw and customizable packaging.

Galvanization, or galvanisation, (or galvanizing as it is most commonly called in that industry), is the process of applying a protective zinc coating to steel or iron, to prevent double start screw rusting. The most common method is hot-dip galvanizing, in which parts are submerged in a bath of molten zinc. Galvanizing protects in three ways:
It forms a coating of zinc which, when intact, prevents corrosive substances from reaching the underlying steel or iron.
The zinc serves as a sacrificial anode so that even if the coating is scratched, the exposed steel will still be protected by the remaining zinc.
The zinc protects its base metal by corroding before iron. For better results, application of chromates over zinc is also seen as an industrial trend.
Hot-dip galvanizing is the process of immersing iron or steel in a bath of molten zinc to produce a corrosion resistant, multi-layered coating of zinc-iron alloy and zinc metal. While the steel is immersed in the zinc, a metallurgical reaction occurs between the iron in the steel and the molten zinc. This reaction is a diffusion process, so the coating forms perpendicular to all surfaces creating a uniform thickness throughout the part.

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Category Double Start Screw
Finish Galvanizing or As request
Type Multiple Threaded or As request
Material Bronze/Stainless Steel/Steel/Aluminum/Brass
Brand Ever Hardware
Place of origin China Mainland
Size option As request
Color Yellow or as request

Double Start Screw Twin Double Multiple Threaded Splitting ConesEver Hardware Industrial Limited

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