Kruvikeerajates

Kruvikeerajates is the Estonian form of the word kruvikeeraja used to refer to screwdrivers in contexts that express location or inclusion in plural form. It is not a separate tool; rather, it is a grammatical variant of the noun used when discussing screwdrivers in Estonian.

Screwdrivers are hand tools designed to turn screws. A typical unit has a handle, a shaft, and a tip. Handles are often plastic, wood, or rubber overmolded; shafts are steel, and tips are hardened and shaped for specific screw heads. Some tips are magnetized to hold fasteners.

Common tip types include flat-head (slotted), Phillips, Pozidriv, Torx, square (Robertson), hex (Allen), and various security styles. Interchangeable-bit screwdrivers allow swapping tips without changing tools; fixed-tip models provide specialized use. Materials range from economical chromed steel to high-grade alloy blades.

Use and standards: choose the correct size and type for the screw, apply steady torque, and maintain a firm grip on the handle. Do not use screwdrivers as chisels or prying tools. International and national standards from ISO and DIN govern tip shapes, tolerances, and compatibility with screws to promote safety and interoperability.

History and context: screwdrivers evolved with metalworking and mass production, with early forms appearing in the 18th and 19th centuries. Today, kruvikeerajates remains a common term in Estonian for the tool category and its varieties.