NIMS 3.6 - Review

A machining process that creates a flat spot on a rough surface is

• countersinking

• spotfacing

• counterboring

• chamfering

A machining process that creates an included "V" angle or taper in a hole is

• countersinking

• spotfacing

• counterboring

• spot drilling

Center drills are used to

• slightly enlarge an existing hole

• create a hole through a workpiece

• create a starting spot for a hole

When drilling for a 1/4" reamer, the proper amount of material to leave for the reamer is

• 0.005"

• 0.010"

• 0.015"

• 0.025"

What is the series of the following thread: 3/4-10 UNC -3A?

• 3

• A

• UN

• C

Most tap drill charts suggest a hole size that will produce about what percentage of thread depth?

• 60%

• 50%

• 80%

• 75%

Which tap is considered a general, all-purpose tap?

• Bottoming tap

• Plug tap

• Taper tap

• Spiral tap

What operation can create a very accurate hole size with a very good surface finish?

• Coutnersinking

• Chamfering

• Drilling

• Reaming

After drilling, and before tapping, a hole should be

• reamed

• countersunk.

• counterbored.

• spotfaced.

What type of tap pulls chips out of the hole being threaded?

• Form tap

• Hand tap

• Spiral flute tap

• Spiral point tap