Bits for the screwdriver. The main types and marking

Anyone who has ever engaged in repair, building or even assembling furniture, and knows what a screwdriver will certainly agree that screwdriver in the sector – a very useful thing. But if the workload is quite large – and generally irreplaceable. But if buying a drill, pay attention to his model, capacity and reliability, about such things as bat, is usually overlooked, considering it as the usual consumables. But in vain! Without this unprepossessing in appearance, looks like a piece of ordinary screwdrivers, things, any, even a modern technique can only be a pile of scrap metal. And when you consider that the bits for the screwdriver can stand enormous loads and mismatched bits is able to transform any, even the most modern, the screw gun in a real punishment, then the matter of choice it should be treated with the utmost seriousness.

What are the bits for the screwdriver and marking

• Cross. There are two types – Ph and Pz. Bits Ph (Phillips) Phillips slots and angle at the base of the 55^O have dimensions from zero (Ph0), designed for the smallest screws, to Ph3, designed for use with large screws. Bits for the screwdriver Pz (Pozidrive) are an improved version of Ph. Having at the base an angle of 50^O, they are provided with additional slots (the so-called “double cross”) to increase the area of contact with the screw. The same as Ph, they have a size of from 0 to 3. The standard Ph is more versatile because it can approach the other screws.
• Hex (Torx) . These bits for the screwdriver, as the name implies, have the form of hexagonal stars and are used to tighten the screws, screws or screws with internal hexagon. After the type bits specify the size of the diameter of the slot in millimeters.
• Nuts and bolts. Used to tighten the fasteners with external hexagon, such as roofing screws. Also marked in millimeters.
• An Asterisk (Torx hole). Applied in household appliances and cars. Have a size of from 8 to 40. It should be borne in mind that these bits can be both internal holes and without them.
• Slotted (SL). This is the most conventional flat bits. Widely used for bolts and screws. Tip width slotted bit indicates millimeters.

Besides the basic types, there are very specific bits for screwdrivers, for example, double pin – similar in appearance to Phillips, but with a slot in the middle, or tri-wing and torq-set similar to crusade.

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Bits for the screwdriver. How to choose exactly what you need?

Choosing the bit for the screwdriver, you need to check how it corresponds to the screw or screw you want to tighten. Bit needs to be held firmly in his head. Otherwise, the torque will be transmitted is not enough, during operation, will be heard “nasty” sounds, and as a result, the bit very quickly solifuges and unusable. Choose her, of course, is best from well-known manufacturers. Real quality bits made from wear-resistant tool steel, designed for the heavy loads, and application extension design magnetic adaptor allows you to operate in even the most remote places.

For a variety of tasks when performing repair and construction works it is best just to buy the bit set for the screwdriver. Containing a variety of attachments, this set allows you to comfortably work with virtually any equipment.