click below
click below
Normal Size Small Size show me how
Ch 4 Hand tools
Hand tools
Term | Definition |
---|---|
Lifetime tool guarantee means | the tool will be replaced or repaired if it ever fails or breaks. |
Body Hammers- | are used for striking and exerting an impact on a part. Designed to work with sheet metal. They often have a point on one end and a flat head on the other end |
Ball peen hammer | has a flat face for string and round peen end for shaping sheet metal. |
Brass or Lead hammer | will make heavy blows without marring the metal surface. The soft metal head will dent and protect parts. |
A plastic hammer | is for making light blows where parts can be easily damaged. It is used on delicate parts. |
A dead blow hamme | r has a metal face filled with lead shot (balls) to prevent rebounding. The metal will not bounce back up after being hit. |
A rubber mallet | has a solid rubber head that is heavy, it is often used to gently bump sheet metal without damaging the painted finish. |
Picking hammers | are designed to work with sheet metal. They often have a pointed end. |
Bumping hammers | are used to bump out large dents. They may have a round or square face. |
Finishing hammers | are used to achieve the final sheet metal contour. The face on a finishing hammer is smaller. |
Shrinking hammers | are finishing hammers with a serrated or cross grooved face. |
Dolly or dolly block- | is used like a small portable anvil. It is held on the backside of a panel being struck by a hammer. |
Body spoons | are used sometimes like a hammer and at other times like a dolly. |
Vise- | will secure or hold parts during hammering, cutting, drilling, and pressing. Normally it is bolted to a workbench. Should only ever be tightened by hand! |
Vise caps | are soft and protect a part from marring. Vise jaws are often knurled and the small teeth will damage parts if they are not covered. |
C-clamp | is a screw attached to a curved frame. It will hold objects on a work surface or drill press while you are working on them. |
Wrenches- | are used to loosen or tighten nuts and bolts. Wrench size is the distance across the wrench jaws. The come in two sizes, standard (inches) and metric (millimeters) |
A crescent wrench or adjustable wrench | has movable jaws to fit different head sizes. It can be used when a correct size wrench is not available. |
Open ended wrench | has three-sided jaws on both ends, this type of wrench is good if the bolt or nut is not very tight. The open jaws are weak, if a bolt is extremely tight the open-end wrench will bend or flex outward. |
A box end wrench | has closed ends that surround the bolt or nut head. It is available in 12 point and 6 point types. |
A combination wrench | has both types of ends- box end and open end. |
An Allen wrench | is a hex, hexagon, or six-sided wrench. It will install or remove set screws. |
A line wrench | has a small split in its jaw to fit over lines and tubing. It can be slipped over fuel, brake and power steering lines. |
Ratchet or ratcheting wrench, | has a small lever that can be moved for either loosening or tightening bolts and nuts. |
Sockets- | cylinder-shaped, box end wrenches for rapid turning of bolts and nuts. |
Swivel sockets | have a universal joint between the drive end and socket body. |
Impact sockets | are thicker and case hardened for use with an air powered impact wrench. |
Extensions | fit between the socket and its drive handle. They allow you to reach in and install the socket when surrounded by obstructions. |
A universal joint | allows you to reach around objects with a socket wrench and extension. It will flex, allowing you to rotate the socket from and angle. |
A torque wrench | is used to measure tightening force. |
A breaker bar | provides the most powerful way for turning bolts and nuts. |
Pry Bars | are used to gain leverage for shifting heavy parts. They are hardened steel bars with various end shapes. |
A speed handle | can be rotated to quickly remove or install loose bolts and nuts. |
Screwdrivers- | allow you to rotate screws for installation or removal. Each fastener requires a specific type. |
A standard screwdriver or flat head screwdriver | has an end with a single flat blade for fitting into the slot in the screw. |
A Phillips screwdriver | has two crossing blades for a star shaped screw head. |
Pliers- | are used for working with wires, clips and pins. They will grasp and hold parts like fingers. A collision tech should own several types. |
Channellock pliers | have several jaw settings for grasping different size objects. They will open wider than combination pliers. |
Needle nose pliers | have long thin jaws for reaching in and grasping small parts. |
Vise grips or locking pliers | have jaws that lock into position on parts. |
Diagonal cutting pliers or side cut pliers | have cutting jaws that will slip off wires flush with a surface |
A center punch | is pointed to start a drilled hole or to mark parts. The indentation will keep a drill bit from wandering out of place. |
Chisels | are handy for some cutting operations. For example, can be used to shear off rivet heads or separate sheet metal parts. |
Sheet metal gauge | is used to measure body or repair panel thickness or gauge size. |
Tinsnips | are the most common metal cutting tool. |
Panel cutters | will precisely cut sheet metal, leaving a clean, straight edge that can be easily welded. |