A screwdriver is a tool, manual or powered, used for screwing (installing) and unscrewing (removing) screws. A typical simple screwdriver has a handle and a shaft, ending in a tip the user puts into the screw head before turning the handle. The earliest documented screwdrivers were used in the late Middle Ages. They were probably invented in the late 15th century, either in Germany or France.
The tool used to drive a slotted screw head is called a standard, common blade, flat-blade, slot-head, straight, flat, flat-tip. Among slotted screwdrivers, variations at the blade or bit end involve the profile of the blade as viewed face-on (from the side of the tool). The more common type is sometimes called keystone, where the blade profile is slightly flared before tapering off at the end, which provides extra stiffness to the workface and makes it capable of withstanding more torque.
Description:
Suitable for safe live working under voltage in electro technical fields. Screwdrivers approved by State Testing Laboratory meet EN 60900:2004 (IEC 60900:2004) requirements. Declaration of conformity issued in accordance with law. Each item is tested for electric breakdown in a water bath at 10 000 V. Safe working up to 1 000 V is guaranteed.
- treated highly alloyed steel
- black surface
- insulated coating
- ergonomic handle with round cross-section
- multi-component grip of hard PP core and soft TPE cover
- the shape prevents the tool from rolling away
Technical Parameters:
| Blade diameter | 4 mm | Shaft length | 100 mm | |
| For slot with length | 4 mm | Handle size | 90 х 29 mm |
technical change and errors excepted
Manufacturer Code:
833005
Standard 3:
IEC 60900:2012 Live working - Hand tools for use up to 1 000 V a.c. and 1 500 V d.c.
