- NANCH PRECISION TOOLS SCREWDRIVER SET 23 PIECE DRIVERS
- NANCH PRECISION TOOLS SCREWDRIVER SET 23 PIECE MANUAL
- NANCH PRECISION TOOLS SCREWDRIVER SET 23 PIECE FULL
The tool's original names in German and French were Schraubenzieher (screwpuller) and tournevis (turnscrew), respectively. They were probably invented in the late 15th century, either in Germany or France. The earliest documented screwdrivers were used in the late Middle Ages. Many options and enhancements, such as built-in bubble levels, high/low gear selection, magnetic screw holders, adjustable-torque clutches, keyless chucks, 'gyroscopic' control, etc., are available.
NANCH PRECISION TOOLS SCREWDRIVER SET 23 PIECE DRIVERS
Variations include impact drivers, which provide two types of 'hammering' force for improved performance in certain situations, and "right-angle" drivers for use in tight spaces. Special combination drill-driver bits and adapters let an operator rapidly alternate between the two. This is particularly useful as drilling a pilot hole before driving a screw is a common operation. The two most common are the simple 'blade'-type for slotted screws, and Phillips, generically called "cross-recess", "cross-head", or "cross-point".Ī wide variety of power screwdrivers ranges from a simple 'stick'-type with batteries, a motor, and a tip holder all inline, to powerful "pistol" type VSR (variable-speed reversible) cordless drills that also function as screwdrivers. Screwdriver tips are available in a wide variety of types and sizes ( List of screw drives). Proper use requires that the screwdriver's tip engage the head of a screw of the same size and type designation as the screwdriver tip.
NANCH PRECISION TOOLS SCREWDRIVER SET 23 PIECE FULL
These often have a hollow handle that contains various types and sizes of tips, and a reversible ratchet action that allows multiple full turns without repositioning the tip or the user's hand.Ī screwdriver is classified by its tip, which is shaped to fit the driving surfaces-slots, grooves, recesses, etc.-on the corresponding screw head.
NANCH PRECISION TOOLS SCREWDRIVER SET 23 PIECE MANUAL
Some manual screwdrivers have interchangeable tips that fit into a socket on the end of the shaft and are held in mechanically or magnetically. Handles are typically wood, metal, or plastic and usually hexagonal, square, or oval in cross-section to improve grip and prevent the tool from rolling when set down. The tip may be hardened to resist wear, treated with a dark tip coating for improved visual contrast between tip and screw-or ridged or treated for additional 'grip'.
The shaft is usually made of tough steel to resist bending or twisting. This form of the screwdriver has been replaced in many workplaces and homes with a more modern and versatile tool, a power drill, as they are quicker, easier, and also can drill holes. 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. As May says, it means “you don’t have to carry around a box filled with screwdrivers.A screwdriver is a tool, manual or powered, used for driving screws. But if you need a screwdriver only a few times a month (or year), this is your best option. Since the tip and shaft are not part of the same solid piece of metal, a tool like this isn’t as strong as a traditional screwdriver. So if you’re tightening a screw, it’ll apply turning force as you rotate your wrist to the right, then let your wrist spin back to the left and into place for another twist - all without removing the screw head from the screw. This is a ratcheting screwdriver, which means the shaft can spin freely in one direction. Its 15 bits - including the standard flathead and Phillips, along with more specialized Robertson and Torx bits (see below), which you probably won’t need until you start a career in decking - are stored inside the handle, so you don’t have to carry around an extra case.
This Lutz screwdriver is a favorite of Strategist senior editor Peter Martin, who learned about it from his uncle, a longtime plumber. Most everything handled by traditional screwdrivers can be taken care of by a single tool with interchangeable bits.
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