| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.20 |
| Score | 0% | 64% |
You are using a hacksaw to cut a Class 8 bolt. What is the most appropriate TPI for your saw blade?
8 TPI |
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10 TPI |
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2 TPI |
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18 TPI |
A Class 8 bolt is made of very hard metal and larger TPI saw blades are most appropriate for very hard metals.
Which of the following statements about drill bits is not true?
drill bit size maxes out at ¼" for woodworking |
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drill bits are primarily right-handed |
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drill bit size maxes out at ½" for metalworking |
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drill bits are primarily left-handed |
Drill bits remove material to create holes. They come in a variety of sizes, maxing out at ¼" for woodworking and ½" for metalworking. The majority of drill bits are right-handed which means they cut while rotating in a clockwise direction.
Which of the following nuts prevent loosening via nylon in their threads?
slotted |
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lock |
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cotter |
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wing |
Wrenches are used with threaded fasteners like bolts and nuts. A bolt has external threads while a nut has internal threads and this thread pattern combination allows them to lock together and act as fasteners. Nuts come in a variety of configurations including wing nuts which provide appendages that allow tightening and loosening by hand, slotted nuts that use a cotter pin to lock the nut in place and prevent it from loosening, and lock nuts that also prevent loosening via nylon in their threads. Threads are identified by pitch which is the number of threads per inch.
Which of the following would be used to make a drilling guide mark in a sheet of metal?
screwdriver |
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chisel |
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pin punch |
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center punch |
A punch is narrow and is used to drive objects like nails (pin punch) or for making guide marks for drilling (center punch) or patterns in wood or metal.
You're creating a tube out of a sheet of metal. What type of fastener are you likely to use?
nail |
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punch |
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rivet |
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glue |
A nail is a short pin-shaped shaft of steel that's typically used to fasten pieces of wood together. It has a flat head on one end and a point on the other. A rivet consists of a cylindrical shaft with a head on one end and a tail on the other. When the rivet is installed, the tail is expanded and reshaped to form another head, creating a dumbell shape that will hold two surfaces together semi-permanently.