Basic Hand Tools

What are wrenches for?

Tightening or loosening fasteners

What are screwdrivers for?

Securing and removing screws

What are Pliers and cutting tools for?

Gripping, bending, cutting, and securing

What are measuring tools for?

For precision measurements

Open-End Wrench

Two open jaws for quick access to fasteners in tight spaces

Box-End Wrench

Fully encloses fasteners to prevent slippage

Combination wrench

Torque wrench

Ensures proper torque application based on manufacturer specs.

Adjustable Wrench

Versatile for different fastener sizes

Ratcheting wrench

Allows for continuous turning without repostitioning

Flathead screwdriver

Used for slotted screws; prone to slipping

Philips screwdriver

Common crosshead screwdriver for aviation fasteners

Prince and reed screwdriver

Torx screw driver

Star-shaped head used in aircraft paneling and avionics

Offset screwdriver

Designed for reaching tight spaces

Ratcheting screwdriver

provides better control and reduces hand fatigue

Needle-nose pliers

Used for precision gripping in confined spaces

Locking pliers

Securely holds objects in place

Safety wire pliers

Twist and secure safety wire to prevent fastener loosening

Aviation snips

Cut through aluminum, stainless steel, and aircraft sheet metal

Diagonal cutters

Used for cutting safety wire, cable ties, and electrical wiring

Calipers

Measure thickness, internal/external diameters, and clearances

The outline part of the caliper is used to measure what?

Outside of the aircraft

The outline part of the caliper is used to measure what?

Inside of the aircraft

The outline part of the caliper is used to measure what?

Depth

Micrometer

High-precision measurement for small components

Check for runout, alignment, and bearing wear

Tape measure

used for general length measurements

Tinner’s Mallet

Speed handle

Ball peen hammer

Hand file

Drive punch