Lineman's pliers

Last updated
Lineman's pliers
Klein lineman's pliers.jpg
Lineman's pliers. This pair features, from top to bottom: gripping jaws, wire cutter, notch for pulling fish tape, crimper for different terminal connections, and rubber-coated handles.
Other namesKleins (US/CAN), nines
ClassificationHand tool
Related Pliers

Lineman's pliers (US English), Kleins (genericized trademark, US usage), linesman pliers (Canadian English), side cutting linesman pliers [1] and combination pliers (UK / US English) are a type of pliers used by lineworkers, electricians, and other tradespeople primarily for gripping, twisting, bending and cutting wire, cable, and small metalwork components. They owe their effectiveness to their plier design, which multiplies force through leverage.

Contents

Lineman's pliers are distinguished by a flat gripping surface at their snub nose. Combination pliers have a shorter flat surface plus a concave / curved gripping surface which is useful in light engineering to work with metal bar, etc. Both usually have a bevelled cutting edge similar to that on Diagonal pliers in their craw, and each may include an additional gripping, crimping, or wire shearing (for a flat ended cut) device at the crux of the handle side of the pliers' joint.

Designed for potentially heavy manual operation, these pliers typically are machined from forged steel and the two handles precisely joined with a heavy-duty rivet that maintains the pliers' accuracy even after repeated use under extreme force on heavy-gauge wire. They usually have grips for better handling than bare metal handles; the grips may also provide insulation for protection against electric shock when working with live circuits, although most models are marked as not listed for such use. Some pliers are certified to withstand a specified voltage, e.g. 1000 V.

Some glass shops use a variation of these pliers as well. [2]

Durability

Like most hand tools the durability and useful working life of pliers vary greatly according to load, the frequency of use, the specific design, and quality of the tool. They may be forged out of alloyed or unalloyed tool steel. For basic quality pliers unalloyed tool steel with a relatively low carbon content of 0.45% may be used. Top-quality pliers are typically made from higher carbon tool steel and alloyed with elements such as chromium, vanadium and molybdenum. [3] [4] In addition to being suitable for cutting soft copper and aluminum, pliers may be specifically designed for cutting hardened wire, such as piano wire or nails, by induction hardening of the cutting edges. [5]

Typical uses

Lineman's pliers are used in the electrical trade to cut, straighten, and bend wire, and also to twist wires together when making splices. Lineman's can be used to strip wire and some types of cable, although wire strippers are more commonly used for this purpose as they can strip wire more quickly without damaging the conductors themselves. They can also be used to pull fish tape through long runs of conduit where the high friction makes it difficult to pull it by hand. Some pliers are equipped with a crimping tool for the purpose of compressing crimp connections.

Lineman's pliers can be used to bend or straighten sheet metal components, especially in cases where smaller pliers don't offer enough mechanical advantage. The square nose and flat side of Lineman pliers is particularly useful for creating accurate right angle bends. The durability of these pliers allows them to be used for tasks like removing nails and other types of fasteners.

Lineman's pliers are similar to needle-nose pliers: both tools share a typically solid, machined forged steel construction, durable pivot, gripping nose and cutting craw. The main differences are that the slender nose of the needle-nose pliers enable it to form small diameter bends, and position or support items in awkward places. Needle-nose pliers typically have a lower handle/nose length ratio, reducing the force that can be exerted at the tip. Also, needle-nose pliers tend to be available in smaller sizes (for electronics applications, they may be found as small as 1/10 scale of the full-size version).

Lineman's pliers may be used to cut steel screws up to #10, and virtually any dry-wall screw, although the thread form will be distorted. Lineman's pliers sometimes include an integrated crimping device in the craw of the handle side of the pliers' joint.

Lineman's pliers have a tapered nose suitable for reaming the rough edge of a 12-inch (13 mm) or larger conduit, or cleaning sharp metal from the inside of a standard metal knockout in an electrical enclosure such as a junction box or breaker panel. Some brands manufacture pliers (i.e. Ideal) with a narrower jaw, suitable for reaming out smaller conduit.

As another function, although not recommended by the manufacturer, many electricians will utilize linesman pliers as a hammer, choosing to forego carrying a heavy hammer around. It is so commonplace that a common joke amongst the various trades disciplines is that "kleins" can be considered a "sparky's" hammer.

Related Research Articles

<span class="mw-page-title-main">Forge</span> Workshops of a blacksmith, who is an ironsmith who makes iron into tools or other objects

A forge is a type of hearth used for heating metals, or the workplace (smithy) where such a hearth is located. The forge is used by the smith to heat a piece of metal to a temperature at which it becomes easier to shape by forging, or to the point at which work hardening no longer occurs. The metal is transported to and from the forge using tongs, which are also used to hold the workpiece on the smithy's anvil while the smith works it with a hammer. Sometimes, such as when hardening steel or cooling the work so that it may be handled with bare hands, the workpiece is transported to the slack tub, which rapidly cools the workpiece in a large body of water. However, depending on the metal type, it may require an oil quench or a salt brine instead; many metals require more than plain water hardening. The slack tub also provides water to control the fire in the forge.

<span class="mw-page-title-main">Hammer</span> Tool consisting of a shaft with a weighted head attached at a right angle

A hammer is a tool, most often a hand tool, consisting of a weighted "head" fixed to a long handle that is swung to deliver an impact to a small area of an object. This can be, for example, to drive nails into wood, to shape metal, or to crush rock. Hammers are used for a wide range of driving, shaping, breaking and non-destructive striking applications. Traditional disciplines include carpentry, blacksmithing, warfare, and percussive musicianship.

<span class="mw-page-title-main">Chisel</span> Tool for cutting and carving

A chisel is a wedged hand tool with a characteristically shaped cutting edge on the end of its blade, for carving or cutting a hard material. The tool can be used by hand, struck with a mallet, or applied with mechanical power. The handle and blade of some types of chisel are made of metal or wood with a sharp edge in it.

<span class="mw-page-title-main">Blacksmith</span> Person who creates wrought iron or steel products by forging, hammering, bending, and cutting

A blacksmith is a metalsmith who creates objects primarily from wrought iron or steel, but sometimes from other metals, by forging the metal, using tools to hammer, bend, and cut. Blacksmiths produce objects such as gates, grilles, railings, light fixtures, furniture, sculpture, tools, agricultural implements, decorative and religious items, cooking utensils, and weapons. There was an historical distinction between the heavy work of the blacksmith and the more delicate operation of a whitesmith, who usually worked in gold, silver, pewter, or the finishing steps of fine steel. The place where a blacksmith works is called variously a smithy, a forge or a blacksmith's shop.

<span class="mw-page-title-main">Electrician</span> Tradesperson specializing in electrical wiring

An electrician is a tradesperson specializing in electrical wiring of buildings, transmission lines, stationary machines, and related equipment. Electricians may be employed in the installation of new electrical components or the maintenance and repair of existing electrical infrastructure. Electricians may also specialize in wiring ships, airplanes, and other mobile platforms, as well as data and cable lines.

<span class="mw-page-title-main">Drill bit</span> Type of cutting tool

A drill bit is a cutting tool used in a drill to remove material to create holes, almost always of circular cross-section. Drill bits come in many sizes and shapes and can create different kinds of holes in many different materials. In order to create holes drill bits are usually attached to a drill, which powers them to cut through the workpiece, typically by rotation. The drill will grasp the upper end of a bit called the shank in the chuck.

<span class="mw-page-title-main">Pliers</span> Hand tool

Pliers are a hand tool used to hold objects firmly, possibly developed from tongs used to handle hot metal in Bronze Age Europe. They are also useful for bending and physically compressing a wide range of materials. Generally, pliers consist of a pair of metal first-class levers joined at a fulcrum positioned closer to one end of the levers, creating short jaws on one side of the fulcrum, and longer handles on the other side. This arrangement creates a mechanical advantage, allowing the force of the grip strength to be amplified and focused on an object with precision. The jaws can also be used to manipulate objects too small or unwieldy to be manipulated with the fingers.

A reamer is a type of rotary cutting tool used in metalworking. Precision reamers are designed to enlarge the size of a previously formed hole by a small amount but with a high degree of accuracy to leave smooth sides. There are also non-precision reamers which are used for more basic enlargement of holes or for removing burrs. The process of enlarging the hole is called reaming. There are many different types of reamer and they may be designed for use as a hand tool or in a machine tool, such as a milling machine or drill press.

<span class="mw-page-title-main">Wire stripper</span> Tool used to strip electrical insulation from electric wires

A wire stripper is a small, hand-held device used to strip the electrical insulation from electric wires.

<span class="mw-page-title-main">Sheet metal</span> Metal formed into thin, flat pieces

Sheet metal is metal formed into thin, flat pieces, usually by an industrial process.

<span class="mw-page-title-main">Crimp (joining)</span> Joining metal workpieces by deforming one or both to hold the other

Crimping is a method of joining two or more pieces of metal or other ductile material by deforming one or both of them to hold the other. The bend or deformity is called the crimp. Crimping tools are used to create crimps.

<span class="mw-page-title-main">Japanese carpentry</span> Distinctive woodworking style

Japanese carpentry was developed more than a millennium ago that is known for its ability to create everything from temples to houses to tea houses to furniture by wood with the use of few nails.

<span class="mw-page-title-main">Eyebar</span> Straight metallic bar with a hole ("eye") at each end for fixing to other components

In structural engineering and construction, an eyebar is a straight bar, usually of metal, with a hole ("eye") at each end for fixing to other components. Eyebars are used in structures such as bridges, in settings in which only tension, and never compression, is applied. Also referred to as "pin- and eyebar construction" in instances where pins are being used.

This article is a list of terms commonly used in the practice of metalworking – the science, art, industry, and craft of shaping metal.

<span class="mw-page-title-main">Knipex</span> German manufacturer of pliers and other tools

Knipex is a German manufacturer of pliers, pliers wrenches, and other tools. Its tools are principally for professional use in various trades, but they since the 2010 are also increasingly popular for DIY and EDC use as well.

<span class="mw-page-title-main">Needle-nose pliers</span> Pliers with a narrow, pointed tip

Needle-nose pliers, also known as long-nose pliers and snipe-nose pliers, are both cutting and holding pliers used by artisans, jewellery designers, electricians, network engineers and other tradesmen to bend, re-position and snip wire. Their namesake long nose gives excellent control while the cutting edge near the pliers' joint provides "one-tool" convenience. Because of their long shape they are useful for reaching into small areas where cables or other materials have become stuck or unreachable with fingers or other means.

<span class="mw-page-title-main">Wire wrapped jewelry</span> Technique for making jewelry

Wire wrapping is one of the oldest techniques for making handmade jewelry. This technique is done with jewelry wire and findings similar to wire to make components. Wire components are then connected to one another using mechanical techniques with no soldering or heating of the wire. Frequently, in this approach, a wire is bent into a loop or other decorative shape and then the wire is wrapped around itself to finish the wire component. This makes the loop or decorative shape permanent. The technique of wrapping wire around itself gives this craft its name of wire wrapping.

<span class="mw-page-title-main">Multi-tool</span> Hand tool combining several individual functions

A multi-tool is a hand tool that combines several individual functions in a single unit. The smallest are credit-card or key sized units designed for carrying in a wallet or on a keyring, but others are designed to be carried in a trouser pocket or belt-mounted pouch.

<span class="mw-page-title-main">Klein Tools</span>

Klein Tools, Inc. is an American company based in Lincolnshire, IL that manufactures hand tools. The company is known for its popularity with workers in the electrical and telecommunications industries. Lineman's pliers in the past were often called "Kleins," an example of a genericized trademark.

Channellock is an American company that produces hand tools. It is best known for its pliers—the company manufactures more than 75 types and sizes of pliers—particularly its eponymous style of tongue-and-groove, slip-joint pliers. Its pliers have distinctive sky-blue handle grips; the company has been using the same trademarked shade of blue since 1956.

References

  1. "Lineman's pliers: History, Functions, Features". tool4electrician. Retrieved 22 September 2021.
  2. "Lineman's Pliers, American style, DIN ISO 5746, ASME B107.20". KNIPEX. Retrieved 11 June 2018.
  3. "Pliers-ABC » Basic Information about Pliers". KNIPEX.
  4. "Pliers > Linemen's". Channel Lock.
  5. "Pliers-ABC » The Combination Pliers". KNIPEX.