That every man should be aware of screwdrivers and screws

- Nick, something regiment become loose. Come on, tighten up.

- And what sort of screws? "Plus sign" or "minusik"?

Yes, friends, this is the classification of the sometimes limited knowledge of screwdrivers. I understand that not everything in life often have to tighten the screws. But men, sooner or later, a girl, a wife, a colleague asks you something to tie. And how will it end? We dig up half an hour, tore all the faces posbivat hands, but could not do? Let's understand once and will be handsome 😎 Especially because of this knowledge depends on the strength of fasteners. Go.

On the "minus-" simple. Picked up by the screw slot width and you can work. On the "plus sign" is not so smooth. There are two common profile cross screwdrivers. Outwardly, they look like, but radically different in design. Let's investigate.

The number "1" I marked a Phillips screwdriver (bits) with the profile of PH. This is an older type of profile. The main difference is that the faces taper to a tip. This makes it possible to limit the clamping force. Once it reached the required tightening torque screwdriver slips in the screw.

When twirl RN screw and screwdriver bit slips to push it useless. Great risk to break off red-hot screw. He is not designed for large torques. In this case, it makes sense to drill a pilot hole with a smaller diameter or take a shorter screw.

Reference numeral "2" are marked screwdriver (bits) with the profile of type PZ. They differ in that the faces of the cross-parallel to each other, and there are additional ribs between them. This screwdriver allows the clamp screw with a great effort.

On the heads of screws type PH we see only Crosspoint deepening. Most often they are black or white (zinc-plated) of color. On hats PZ profile has additional incisions between the main faces. These screws are usually made "yellow." Due to the greater strength they are called reinforced, structural or carrier.

The profile type is always applied to the bits for the screwdriver. If you use a screwdriver for other purposes, it fits tightly into the screw, as a result, we get shot down edges, like on a bit '1'. " Within each Profile secrete several sizes, which represent a digit. Correctly picked up bits sits in the screws, like a glove.

Let's use the screwdriver correctly. Hopefully, the stuff was helpful. Thank you for reading my article. Would you like to see more of such materials, subscribe to a channel and, of course, put your finger up 👍.