Question

what tool is needed to repair threads in a hole or within a nut?
round file
tap
stud
die
5 multiple choice 10 points
sae bolt strength is measured by grade. what are the three most common grades?
0,4,6
2,5,8
8.8,10.9,12.9
1,2,3,4
6 multiple choice 10 points
metric bolt strength is measured by class. what are the three most common classes?
2,5,8
0,4,6
8.8,10.9,12.9
1,2,3,4

Explanation:

1. Taps are used to cut or repair internal threads in a hole or nut.
2. The three most common SAE bolt - strength grades are 2, 5, 8.
3. The three most common metric bolt - strength classes are 8.8, 10.9, 12.9.

Answer:

1. B. Tap
2. B. 2, 5, 8
3. C. 8.8, 10.9, 12.9