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DIN 571

DIN 571 lag screw, coach bolts, wood screw (self-tapping screw) is a screw with a drill bit (that is, a screw without a nut), and an improved self-tapping bolt. There are thick rods and full threads.

DIN 571 Product Details

DIN 571 Thick rod products include Screw and thread, one end of the screw is formed with a pointed head. The pitch is relatively large. It is a bit like a chipless tap. It can be directly screwed in without tapping. The thread lead is larger than the mechanical thread, and the thread length is greater than or It is equal to 0.6 of the specification length, the thread angle is 60degree, and the product specification is M4-M20, etc.

DIN571 hexagon head wood screws are a kind of mechanical parts used for fastening connections, and they are widely used. Its characteristics: a wide variety of specifications, different performance and uses, and a high degree of standardization, serialization, and generalization. On all kinds of machinery, equipment, vehicles, ships, railways, bridges, buildings, tools, instruments, meters and supplies, you can see all kinds of self-tapping nails.


Hexagonal Wood Screw is similar to machine screw, but the thread on the screw is a special wood screw thread, which can be directly screwed into the wooden component (or part) for fastening a metal (or non-metal) part with a through hole to a wooden component. It have a coarser pitch than sheet metal or machine screws, and often have an unthreaded shank. The threadless shank allows the top piece of wood to be pulled flush against the under piece without getting caught on the threads. This connection is also removable.

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