The dowel-nail is a type of fastening material. It has two parts: the nail itself (with or without thread) and the body (usually plastic). It is used in construction. Due to the special design, when the spacer part expands when screwing in, it provides a much better fixation.
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The content of the article
- Dowel-nails size chart
-
Fastener classification
- By type of installation
- By surface material
- Specifications
Dowel-nails size chart
The fasteners are very easy to use: you must first make a hole, install and hammer it in with a hammer.
According to the established standards, they are manufactured with a diameter of 5, 6, 8, 10 mm and a length of 20 to 150 mm. Sometimes there are 4 mm fasteners. Their size must correspond to the design parameters. Marking is applied to each unit. The symbol is the diameter and length of a specific product (for example, 4 * 20, 4 * 40).
The required parameters for all types can be found in the table.
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Fastener classification
Choosing the right type of fastening is a responsible task. First, you should consider some features:
- the force of the load on the structure, its surface and the nail itself;
- pressure characteristic;
- types of fastening;
- processed material;
- location of the surface.
Exist many types of dowelssuitable for different designs.
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By type of installation
Due to the diverse structure of nails, tools are used in working with them. Dowels with a thread are hammered or screwed in. If a mistake is made, it is easily dismantled. A non-threaded nail can only be driven in with a hammer and cannot be removed.
Using a construction gun allows you to work faster. Installation is carried out by screwing in a nail with a stopper.
By surface material
Very strong - nylon, suitable for standard stone. With a diameter of 2–16 mm, they can withstand a load of up to 400 kg.
Other varieties:
- With spiral ribs for concrete.
- Reinforced spacer.
- T-dowel (for fixing shelves, furniture).
- With incisors and helical ribs - for drywall.
- Driva - for cables, skirting boards, wiring.
- Butterflies - for the heaviest objects. The bottom line is that when hammering, the wings open, contributing to a strong hold.
- Mushroom - holds foam and other fragile materials securely and neatly.
- Facade - for hollow materials.
- Clamps - fastening wires to the walls.
- For decoration and not heavy objects.
Choosing the wrong mount will ruin the work done.
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Specifications
Manufacturing rules only documented for expansion dowels. Manufactured from 70 grade BK and KK specialty metal. Be sure to undergo heat treatment. Their hardness and curvature must correspond to the established indicators. Each unit is coated with a zinc layer to protect against corrosion.
On the basis of one document, the remaining varieties are made.
Dowel-nails - irreplaceable material for renovation work. If you study their general characteristics and types, then choosing the right material for work will not be difficult.
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