4-46.
4-47.
4-48.
4-49.
4-50.
4-51.
Which of the following tools are
used in boiler, locomotive, and
railroad shops for tapping holes in
the outer and inner plates of
boilers?
4-52.
To enlarge and true a hole, you
should use which of the following
tools?
1. Breast drills
2. Precision gage blocks
3. Staybolt taps
4. Vernier calipers
1. A scriber
2. A vernier caliper
3. A reamer
4. A jeweler's hammer
4-53.
What are the three parts of a
reamer?
Rethreading dies are used for which
of the following purposes?
1. To start tapping operations
2. To restore bruised or rusty
threads on screws and bolts
3. To remove threads from screws
and bolts
1. Body, stem, and flange
2. Body, shank, and blades
3. Blades, flange, and rim
4.
Shank, flange, and wheel
4-54.
Where can you find the size of a
reamer?
4. To make threads on the inside
of nuts
1. Stamped on the shank of the
t o o l
The two-piece collet die consists
of two die sections.
What are the
two sections called?
2. Stamped between the blades of
t h e t o o l
3. Painted on the body of the tool
4. Scribed on the body of the tool
1. The collet nut and collet bolt
2. The collet screw and collet
washer
4-55.
Solid taper-pin reamers are made
with what standard taper?
3. The collet groove and collet
ridge
4. The collet cap and collet guide
The mud or washout tap has a total
of how many threads per inch?
1.
12 threads per inch
2.
15 threads per inch
3.
18 threads per inch
4.
20 threads per inch
Tapered boiler taps have tapered
diameters that increase at what
rate?
1.
3/4 inch per foot
2.
1/2 inch per foot
3.
1/4 inch per foot
4.
1/8 inch per foot
4-56.
An expansion reamer is made from
which of the following materials?
1.
Plastic
2. Carbon steel
3. Copper
4. Lead
1.
1/8 inch per foot
2.
1/4 inch per foot
3.
1/2 inch per foot
4. 3/4 inch per foot
4-57.
Solid taper-pin reamers come with
which of the following types of
flutes?
Thread cutter sets contain which of
the following items?
1.
Straight flutes only
2.
Spiral flutes only
3.
Straight and spiral flutes
4.
Square flutes
1. Taps, dies, and diestocks
2. Tap wrenches, guides, and
screwdrivers
3. Wrenches for making adjustments
4. All of the above
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