What we do not know about the self-tapping screws ?

Features of different types of mounting: self-tapping screws for profile

The main advantage of the screw - is its ability to independently prodelyvat in the structure of the material helical thread.This quality has and screw.Their difference lies in the fact that the longer screw for breaching holes, screws - screw tight surface to each other, including metal materials, concrete structures, brick.

Screws are divided into types according to the type of screw tip:

• hemispherical
• Allen
• a secret tip
• semi-cylindrical

Using the type of fastening is based on the strength of the material.The quality of the construction material, its strength play a fundamental role in the selection of screws, thread it, head and upper spraying.

Screws Profile - use different variants of materials

screws are attached to different types of profile:

- metal

- wooden

- gypsum boards

Screws designed for wooden fixtures, have a tenuous thread and sharptip.The need to make a preliminary hole in the wooden surface is not available.Compliant structure of this profile well passes a metal rod, without destroying the hole circle.

Screws are used and worn drywall materials.Builders use them as wall covering, ceilings.Relatively costly physical force attachment is reliable and easy to use.Indispensable assistant perform electric screwdriver.

Given the fact that the self-tapping screws are used in most cases for finishing work on the surface of the wooden profile or sheet of drywall should remain minimal footprint by drilling holes and slightly be seen head screws (not to be above the level of the mounting surface of the material).

use of such fasteners for metal profiles has its own advantages.Screws stainless steel Profile possess property, are composed of carbon and metal anti-corrosion coating.Fixing such means is a reliable and long-term structure.Stainless feature and have galvanized and fosfartirovannye screws.

Screws Profile - classification of species composition,

structure Based on the above specific characteristics, self-tapping screw is used for the metal profiles (thickness 0, 2 cm) and the drywall layers.

Key Features screw better viewed as an example of its use for concrete structures:

1. Made of steel
2. surface covered fosfartirovannym or oxidized means
3. tip - drill
4. countersunk head
5. Phillips head screwdriver
6. spiral thread - thick

Mount gipsovolokna on metal profiles occurs screws having the characteristics:

1. composition - steel
2. Fosfartirovannoe spraying
3. sharp tip
4. little head
5. average frequency of the threads

Self-bug used to attach the metal profiles and metal bearing structures.Used without drilling.Has properties:

1. Steel
2. galvanized, oxidized plating
3. tip-drill
4. truncated head
5. Phillips screwdriver
6. thick thread

Press washer - screw for metal profile to the supporting wooden and iron structures.Used without drilling.Features:

1. Steel
2. galvanized coating
3. Sverlova tip
4. hemispherical head
5. cruciform connector
6. thick thread

important to note!The choice of materials depends on the screws, and the function of the fasteners.It is necessary to pay attention to the connector screw in accordance with the chosen nozzle hole in the screwdriver.