Construction Hand Tools: Find Your Pliers

Construction Hand Tools: Find Your Pliers

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Construction workers use hand tools like pliers. Pliers are designed for gripping objects. It is used for many purposes, requiring different jaw configurations for turning, pulling, crimping or gripping. Using the wrong pliers can make the tool useless.

Pliers are one of the handiest tools common for many skillful trades and occupations. It has parallel handles, an axle where the handles join and a parallel mouth that takes hold of the object.

Pliers were invented around 2000 BC, showing illustrations of the Greek god Hephaestus. Now, it is intended primarily for safe handling of bits and pieces. Different designs and types of pliers are available in the market.

Design
The basic design of pliers is broken down to three basic elements - the handles, pivot and the head section. The head section has cutting edges. The mouth meets each other at one hinge angle.

The pliers works like an extension arm. Grip the hands of the tool to grab or hold an object. The force applied is relative to the force of your grip.

Steel alloys with Vanadium and chromium are materials used in making pliers. These metals improve alloy potency, thus preventing corrosion. Grips are made of insulators to avoids electrical conductivity.

Types of pliers depend mainly on the material used in gripping. Here are some information on how to distinguish the type of pliers you should use:

Types
Gripping pliers are used to hold objects that plain hands cannot do. It is also called the linemans pliers or combination pliers. Gripping pliers include the following:
Flat-nose These pliers shaped like a ducks bill, with long, flat and narrow jaws. Flat nose pliers are stronger than long-nosed but not good in reaching small and narrow spaces.
Round-nose snub nosed pliers.
Locking pliers It is used in loosening bolts and nuts. The size and clamping pressure are adjustable with a screw. These pliers are also known for vise grips or mole grips.
Long nose pliers (needle nose) This type of pliers are used in twisting, cutting, holding and shapes a wire. It has a thin long nose for tight spaces The mouth has a built-in wire cutter.
Tongue and Groove pliers (channel lock pliers) This tightens and adjusts nuts and bolts with a tongue.

Special Purpose Pliers
Breaker-grozier pliers include:
Fencing tools a hammer, nail puller and wire cutter all in one device.
Wire-stripping pliers It cuts and eliminates insulation though leaving the wire unbroken.
Nail-pulling pliers This type of pliers is a revision of the end nipper. It is used for cutting wires that allows the nail to be selected on a rocking motion.
Retaining-ring or circlip pliers Used for fixing retaining rings.

Adjustable pliers
Groove-joint or tongue-and-groove pliers It is designed to grip different sizes with adjustable jaws.
Slip joint pliers Slip joint is similar to combination pliers. Its pivot can be slipped in two holes to change size.
Cutting pliers
Diagonal pliers such as side-cutting pliers and wire cutters. It is not regarded a real pliers because is it mainly used in cutting.
Needle-nose pliers A cutting pliers with a gripping function.
Pinching pliers or end-nippers for pinching or squeezing

Crimping pliers are used for:
Crimping connectors and electrical terminals.
Crimping metal rings on livestock.
Crimping laboratory vials.
Crimping bottles with sprayer tops.
Crimping security seals on load carriers.

Rotational pliers were developed by NASA engineers to allow an astronaut to turn the nut into zero gravity. It converts the turning motion, forcing a socket wrench. This includes the slip-joint pliers, long nose pliers, combination pliers and circlip pliers.

Pliers Maintenance
Pliers can last for many years if used properly. Most quality pliers are maintenance free. Some pliers with springs, adjusters and levers may require minimal amount of maintenance.

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