Year 9 Metal – Tap and Die Quiz

What does a tap do in metalworking?

• Measures the metal

• Cuts external threads

• Cuts internal threads

• Drills holes

What is the purpose of a tap drill size chart?

• To select the right bolt

• To decide thread pitch

• To determine the correct hole size before tapping

• To measure metal hardness

Why should the drilled hole be slightly smaller than the thread’s outer diameter?

• So the bolt slides easily

• To create strong threads

• To avoid tapping altogether

• To make the hole larger later

What is the tap drill size for an M8 x 1.25 thread?

• 8 mm

• 6 mm

• 6.8 mm

• 7.2 mm

In imperial thread charts, what does TPI stand for?

• Threads per inch

• Threads per inch

• Taps per inch

• Turns per inch

What tool is used to cut external threads?

• Tap wrench

• File

• Die

• Spanner

What is the purpose of using a tap wrench?

• Tightening bolts

• Holding the metal in place

• Turning the tap evenly

• Drilling holes accurately

A die is used to cut internal threads.

• True

• False

Metric threads use pitch to describe the spacing of threads.

• True

• False

The hole drilled before tapping should be larger than the bolt.

• True

• False