1. 3
Chapter
Basic Hand Tools

2. Objectives After studying this chapter, you will be able to:
Identify common automotive hand tools.
List safety rules for hand tools.
Select the right tool for a given job.
Maintain and store tools properly.
Use hand tools safely.
Explain why insulated tools must be used when servicing electric drive trains.
Correctly answer ASE certification test questions referring to hand tools.

3. Tool Rules
Purchase quality tools, they are lighter, stronger, easier to use, and more dependable than off-brand, bargain tools
Keep tools organized
Keep tools clean- wipe clean and dry after use
Use right tool for job

4. Tool Storage Toolbox Tools left lying on the floor are a safety hazard
Stores and protects tools not in use
Tools left lying on the floor are a safety hazard
(Snap-on Tool Corp.)

5. Wrenches Wrenches Wrench size Used to install and remove nuts
and bolts
Wrench size
Measured across wrench jaws
Stamped on side of wrench
Conventional (inches)
Metric (millimeter)

6. Socket Wrenches Socket Cylinder-shaped Remove nuts and bolts
1/4”, 3/8” and 1/2” drive sizes
6pt and 12pt (most common)
Deep or shallow
Chrome or impact
Socket size printed on
Socket (ex 13/16” or 21mm)

7. Other Wrench Types Allen wrench
Hexagonal (six-sided) shaft-type wrench
Used for set screws on pulleys, gears, and knobs

8. Screwdrivers Remove or install screws Come in many shapes and sizes
Standard has single blade
Phillips has 2 crossing blades
(Snap-on Tool Corp.)

9. Types of Wrenches Open-end wrenches Box-end wrenches
Combination wrenches
Line wrenches
Ratcheting wrenches
Socket wrenches

10. Tools
Ratchet
Torque Wrench
Socket
Extension

11. Pliers Used to grip, cut, crimp, hold, and bend various parts
Various types

12. Hammers Used for operations that involve striking tool or part
Various types

13. Chisels and Punches Chisels Punches
Cut off damaged or rusted nuts, bolts, and rivet heads
Punches
(Snap-on Tool Corp., OTC/SPX Corp., and Proto Tools)

14. Files Remove burrs, nicks, sharp edges
Perform other smoothing operations
Classified by length, shape, and cutting surface
(Starrett)

15. Hacksaw and vise Hacksaw Cut metal Select appropriate blade for job
Teeth should point away from handle
Place one hand on handle and other on end of frame
Vise – used to hold parts during cutting

16. Tools Pry Bars Wire Brush C Clamp Insulated Pliers
Claw type pick up tool
Scraper